# Math facts 1-20: Addition Facts to 20 Worksheets

Posted on## How To Memorize Addition Facts In 6 Weeks Without Flashcards – Blue and Hazel

If you need help teaching your child how to memorize addition facts up to 9+9, this post is for you! Near the end of my son’s 1st grade year, I noticed he was guessing when adding up anything larger than 10. It was beginning to slow him down as new harder concepts got introduced.

He could add up to 10, but beyond that was using his fingers, slow, and very unsure of himself. I didn’t know how else to teach math facts to him and felt a little lost!

Someone told me about a fun supplemental math program called “Addition Facts That Stick” by Kate Snow, and I am SO glad we tried it!

It only took 6 weeks, and was super easy for me to teach as a non mathy mom! My son’s math skills (and math confidence) went way up.

If your child is struggling with their math facts, you don’t need to despair OR run for flashcards! Hint, we didn’t use any flashcards.

Here’s what you can expect daily if you use this, and how it looked in our homeschool when used with my 7. 5 and 6 year old.

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### The 6 week program that taught my kids their math facts without flashcards

**Addition Facts That Stick** is written by Kate Snow, a former 5th grade math teacher turned homeschooler and math tutor. She has also written math curriculum herself, and is a contributor for The Well Trained Mind.

Homeschool parents highly recommended this math supplement in a few of the homeschool Facebook groups I am in. Plus, it only takes about 15 minutes a day for 6 weeks.

For us, it was the perfect switch up when our homeschool routine was getting stale. I put our other math on hold for 6 weeks, and it was the best decision for us!

Some days we only did this for math, while other days I’d do Addition Facts That Stick in the morning and 10-15 minutes of math from our main homeschool curriculum in the afternoon with my 1st grader.

It just depended on the day. I wasn’t concerned about “getting behind” with our other math, because for 6 weeks, getting the addition facts down was my priority. And the kids loved their “new math”.

### Addition Facts That Stick Review on YouTube

If you prefer video, I’ve made a review on YouTube. Or, scroll down to read more!

### When should kids start to know their addition math facts?

Usually, it’s somewhere around 1st or 2nd grade.

Kindergarten math doesn’t really focus on knowing math facts, but introduces math concepts and patterns. Kindergarten does cover adding up to 10 though, usually through visuals and hands on learning.

By the end of first grade kids have usually covered numbers that add up to 20, so 1+1 to 9+9.

That’s 81 total math facts, which is a lot!

### What we used for our 1st grade math curriculum

We had been using Math Lessons For A Living Education and playing math games for my son’s 1st grade year. There were so many parts of it I loved, as well as parts I didn’t.

But my son hadn’t grasped addition facts at all past 10.

Even when we played games, he would guess or count 8+4 on his fingers. It made me doubt my curriculum or my ability to teach him.

I wondered how he would memorize them. Our curriculum used right brain flashcards with the answer on them. (I’d never seen that method before).

You can read my full level 1 and 2 math review here.

If Math Lessons For A Living Education is working for you family, then keep using it! It really does a great job in SO many ways.

And you can easily use Kate Snow’s **Addition Facts That Stick** right alongside it.

### Why just memorizing math facts isn’t the best approach

Without tools to improve number sense or mental pictures to figure out the answer, math facts will likely come in and out of short term memory.

**Addition Facts That Stick** helps kids develop mental pictures and strategies to figure out the answer until they can quickly recall it without the visual! Then, kids practice practice practice through games and worksheets.

It trains kids to see numbers on 10 frames in terms of making groups of 10’s or 5’s, and finding the leftovers.

This is not at all a tool I used growing up (so I was learning too because I still count up on my fingers even as an adult)!

Having to count on his fingers for everything was slowing my son down and tiring his brain! Especially when we were learning new concepts like how to carry numbers from the ones to tens place with Masterbooks level 2.

That’s why I love it Kate Snow’s 6 week addition fact tune up. It’s cheap, and I didn’t have to commit to a full year curriculum, or even switch my curriculum!

Just 6 weeks of practicing addition facts using a new method. Now I could do that, and so can you!

### How to memorize math facts quickly using Addition Facts That Stick

Kate uses a 3 step process for learning math facts. It’s unique because it’s not JUST games, or JUST worksheets, or JUST visuals.

It’s a combo of them used with groups of similar type addition facts, like the +1 & +2 facts on week 1. And the harder ones at the end like +9 and +8 facts.

As skeptical as I was, it works and has helped both me and my kids improve quickly!

Each week will follow this same pattern, covering new addition facts.

**Step 1: Teach your child the strategy using visuals. **

Below is a photo of week 1, day 1. Every week always starts with the 10 frame and counters.

Kate helps kids to look for how many blocks are there, how many are NOT there, and how to think in terms of groups of 5 and 10. It’s slow at first, but then it clicks!

In this case, we used 10 frames and colored blocks I had already. (10 frames are also included in the back of the book).

Day 1 of each week always starts with an *easy to teach lesson* PLUS a math game. You will use the 10 frames every week!

My kids were learning to SEE the connection first, many times over. Sometimes we would use the blocks and 10 frames just for a couple of days, and other times all week if they weren’t getting it.

I noticed by the last 1-2 days of each week, they barely looked at the 10 frames because they knew the answer already.

**Step 2: Practice with games**

Each week, Kate includes a new game to play each day plus a worksheet.

My kids LOVED all the games, and it’s recommended to play more than once a day.

All you need for games is a deck of cards, and a coin! She includes the game boards in the back of the book. You can tear them out of make copies.

**Step 3: Mix old familiar math facts with new math facts** using a worksheet

Each daily worksheet comes with 24 practice problems. There’s always a mix of about half review from previous weeks and half new ones.

This is independent work. I graded it after and had them correct any wrong answers.

If my kids couldn’t do the worksheet alone we would pause and do more practice with the 10 frame.

That was our +8 week around week 5…it was really hard for them and they were guessing a lot.

Here’s an example of a practice page assigned for week 4 which was “Adding Nine”.

### Here’s what a week looked like using Addition Facts That Stick

**Addition Facts That Stick** took us 6 weeks and 15 minutes a day.

Day 1 of each week had a quick lesson (I mostly just read her words out loud in the book). Then, the kids played a NEW weekly game.

Each day for the rest of the week we played that week’s game again and did 1 worksheet. If I remembered, we would play the game again later in the afternoon.

Playing the game more often will only help! They are “mathy” versions of popular games like go fish and addition war.

Kate tells you exactly which cards to use each week and how to play.

Side note, when we got to week 6 and were playing “war”…I quickly saw the game could go on forever! Making math less than fun. So we set a 15 minute timer and then stopped to do the worksheet.

#### Usage rights for printing Addition Facts That Stick

You are allowed to print copies of pages for use within YOUR family, but not to give away.

Since I’ll definitely be using this again as review and also with my younger kids as they get older, I did make copies instead of tearing out the perforated pages in the book.

I printed out 2 copies of each of the daily worksheets and the printable game so I have the option to reuse this book down the road.

### How to know if your child is old enough to use Addition Facts That Stick

Kate Snow, the author recommends that your child:

**recognizes written numbers 1-20****understands the concept of addition (two numbers added together makes a larger number)****has been introduced to place value (understands that 10+3 is the same as 13)****is around 6 years old or older**

Even though my newly 6 year old daughter was just in kindergarten (nearing the end of her year) I decided she could also try it with my son who was ending 1st grade.

I wasn’t going to force her if it seemed too much. But she is sharp, wanted to do it, and loved the games! While she was ready, my son would not have been at that age.

By the 5th week when we were learning a +8 pattern, she was having a hard time and I didn’t force the worksheet. She needed more practice with the 10 frame and that’s ok.

My 7.5 year old seemed to do better, but +8 facts were harder for him to visualize and memorize as well.

So use your best judgement knowing you can always wait and come back to it later!

Here’s her post on everything you need to know about teaching addition facts.

### More early elementary math games I recommend on Amazon

We have been slowly building up our gameschool tools, especially for math! It’s the perfect way to play math, and get practice in without worksheets.

I enjoy it a lot more than regular curriculum! Here’s my **big list of math games**!

We have used many of these for kindergarten and 1st grade. You can read the recommended ages for each game as well. But most practice addition and subtraction through 10 or 20.

Feel free to ask me any specifics on the games in the comments.

### Be realistic that kids will struggle and need more math facts practice

This is my two cents, but I don’t fret if my kids just aren’t getting it.

As with anything this book is a TOOL, and your child is unique. The way they learn may be slower or faster. We all process numbers differently!

The first few weeks were so much easier for my kids than week 5 and 6 with the +8 facts and +7 facts. I didn’t really know what to do.

Pressuring my son to KNOW that 8+7=15 by using the book’s method didn’t go well. Because he felt pressured! So I had to back off a bit, and watch how he tried to figure it out.

If he was clearly guessing, I placed counters on the 10 frames so he could see it. Now I have teacher tools I didn’t have before, even after we move on from using **Addition Facts That Stick. **

#### Save this post for later & let’s connect on Instagram!

Thanks so much for reading this review and I hope it will help your kids in whatever math program they are already using! Remember it’s never too late to use this…it even helped me A LOT at age 32!

If you enjoyed this post, would you take a minute to share on Facebook or Pinterest? Thank you!

I’ll see you over on **Instagram** where I share homeschool life and behind the scenes day to day activities!

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## Addition – PS 321 – 180 7th Avenue, Brooklyn NY 11215 – 718-499-2412

Addition Fact Flashcards

Players practice addition facts 1-20.

Addition & Subtraction Facts Practice

Players use fact family triangles (similar to flash cards) to practice their addition and subtraction facts. This method can help emphasize the relationship between operations.

Addition Top-It

Players add cards to see who has the largest sum.

Bus Stop Addition

Player acts as a bus driver of a double decker bus. In each round, the player will add the number of passengers on the bus with the number of new passengers getting on the bus at the bus stop.

Closer To…

Players try to determine the landmark number their drawn card is closest to, underlining the utility of landmarks in our work as mathematicians.

Coin Top-It

Players add up money and try to get the largest total amount.

Collect $0.50

Players work together to try to collect a total of $0.50.

Compare Addition

Players add and compare to try to find the larger number.

Counters in a Cup

Players practice combinations of 10 by hiding counters in a cup.

Collect $1.00

Players try to be the first to collect a total of $1.00 (Advanced Version “Collect $2.00” also included).

Cross Out Singles

Players add numbers across their game boards and try to get the largest sums.

Dot Addition

Players practice addition facts to 20 by recording combinations of numbers that together make a number on the game board.

Doubling Dice

Players roll numbers, then try to double them… breaking them into friendly tens and ones to help with this.

Finding Doubles to 12

Players race to fill their game board by taking turns finding the sum of doubles facts to 12.

Finding Doubles to 20

Players race to fill their game board by taking turns finding the sum of doubles facts to 20.

Five In A Row Addition

Each player practices addition facts within 12 as they race to get Five-in-a-Row first.

Game of Pig

Players practice mental addition as they try to reach the sum of 100 first.

How Many Am I Hiding

Players practice combinations of 10 by hiding cubes and guessing the missing part.

I Built 10!

Players develop their understanding of combinations of 10 as they build combinations of cards that equal 10.

Jump, Jump Game

Players try to get to a target on a number line by adding and subtracting… in the least amount of jumps possible.

Low Roller

Players practice addition as they race to fill their game board.

Make 10

Players try to find cards that add up to 10 (more challenging versions of adding to 15 and 20 included).

Math Rack Build It!

Players take turns using different groups to make a quantity numbers 2-19.

Moving Between the Decks

Player chooses a number of passengers on the bus 1-20. Player tries to make the number in as many ways as possible.

Number Bond Top-It

Players explore the relationship between addition and subtraction as they try to “top” their partner’s number.

Roll and Record

Players practice their addition facts as they add numbers from 1-12.

Plus or Minus 10

Players practice place value by adding and subtracting groups of 10’s from various numbers 1-100 until the game board is filled!

Shake Those Disks!

This fun activity where students take turns shaking disks addresses the core fluency objective of Grade 1 of adding and subtracting within 10.

Stamp Game

Players practice adding and explore equivalence as they try to be the first to collect 100 stamps.

Target Practice

Players practice combining 2 numbers to make a target number.

Tens Go Fish

Players play Go Fish looking for as many pairs of cards that equal ten. The player with the most pairs wins!

## 50 interesting facts about mathematics ❶⓿⓿ It’s in order!

Interesting facts about mathematics are not familiar to everyone. In modern times, mathematics is used everywhere, even in spite of technological progress. The science of mathematics is valuable to people. Interesting facts about her will interest even children.

1. Not always people used the decimal number system. Previously, a system of 20 numbers was used.

2. The number 0 never existed in Rome, despite the fact that the people there are smart and can count.

3.Sofya Kovalevskaya proved that you can learn mathematics at home.

4. The records that were found in Swaziland on the bones are the oldest mathematical work.

5. The decimal number system began to be used due to the presence of only 10 fingers on the hands.

6. Thanks to mathematics, it is known that a tie can be tied in 177147 ways.

7. In 1900, all mathematical results could be contained in 80 books.

8. The word «algebra» has the same pronunciation in all popular languages of the world.

9. Real and imaginary numbers in mathematics were introduced by Rene Descartes.

10. The sum of all numbers from 1 to 100 is 5050.

11. The Egyptians did not know fractions.

12. Counting the sum of all the numbers on the roulette, you get the number of the devil 666.

13. Three touches of the knife divide the cake into 8 identical parts. And there are only 2 ways to do it.

14. You can’t write zero in Roman numerals.

15. The first female mathematician is Hypatia, who lived in Egyptian Alexandria.

16. Zero is the only number that has several names.

17. There is a world day of mathematics.

18. The bill was created in the state of Indiana.

19. The writer Lewis Carroll, who wrote Alice in Wonderland, was a mathematician.

20. Thanks to mathematics, logic arose.

21. De Moivre was able to predict the date of his own death due to arithmetic progression.

22. Solitaire is considered the simplest mathematical solitaire.

23. Euclid was one of the most enigmatic mathematicians. No information about him reached the descendants, but there are mathematical works.

24. Most mathematicians in their school years behaved disgustingly.

25. Alfred Nobel decided not to include mathematics in his list of prizes.

26. In mathematics there is braid theory, knot theory and game theory.

27. In Taiwan, the number 4 is almost nowhere to be found.

29. Pi has two unofficial holidays: March 14 and July 22.

30. Our whole life consists of mathematics.

1. It was Robert Record who, in 1557, began to use the equals sign.

2. American researchers believe that students who chew gum during math exams achieve more.

3. The number 13 is considered unlucky because of the biblical story.

4. Mathematical works were written even by Napoleon Bonaparte.

5. Fingers and pebbles were considered the first computing devices.

6. The ancient Egyptians did not have multiplication tables and rules.

7. The number 666 is shrouded in legends and is the most mystical of all.

8. Until the 19th century, negative numbers were not used.

9. When translated from Chinese, the number 4 means «death.»

10. Italians don’t like the number 17.

11. Most people consider 7 to be a lucky number.

12. The largest number in the world is the centillion.

13. The only prime numbers that end in 2 and 5 are 2 and 5.

14. The number pi was first introduced into use in the 6th century BC by the Indian mathematician Budhayana.

15. In the 6th century, quadratic equations were created in India.

16. If a triangle is drawn on a sphere, then all its angles will be only right.

17. The first signs of addition and subtraction familiar to us were described almost 520 years ago in the book «Rules of Algebra» written by Jan Widman.

18. Augustin Cauchy, who is a French mathematician, wrote more than 700 works in which he proved the finiteness of the number of stars, the finiteness of the natural series of numbers and the finiteness of the world.

19. The work of the ancient Greek mathematician Euclid consists of 13 volumes.

20. It was the ancient Greeks who brought this science into a separate branch of mathematics for the first time.

## Mathematics in a person’s life: interesting facts — TOP-27

Let’s tell you what mathematician did in a person’s life. Interesting facts and the most fascinating in her world. We will also tell you what scientists are in this field of science and about their discoveries.

** 1. About the origin of ** . From the Greek «mathematics» is «research», «teaching», «science» («mathema»). March 6 is the official day of mathematics all over the world.

** 2. 9 is the magic number **. If you multiply any number by 9 and then add the digits in the resulting number to a single digit, the sum of these numbers will still be 9.

** 3. Stephen Hawking taught students what he himself had just learned ** . Brilliant mathematician and researcher Stephen Hawking admitted that he only studied mathematics when he was in school. While teaching at Oxford, he studied textbook material a couple of weeks before the students. In fact, he was ahead of the students in teaching his own subject by several weeks.

** 4. About Google ** . The name of the Google search engine comes from the unusual English word «googol». This number is equal to one followed by a hundred zeros. It is believed that the creators of the presentation made a mistake and since then the name of the search engine is written as «Google». According to another version, a site called «googol» already existed.

The word «number» is translated from Arabic as «zero». Now you call so each of the numbers.

** 5. Lectures instead of wallpapers ** . Sofya Kovalevskaya’s passion for exact sciences was helped by a chance. When she was a child, her parents did not have enough money for repairs. Forcibly, in their daughter’s room, they had to stick lecture notes on mathematics on the walls instead of wallpaper. So she read the formulas all day long.

** 6. About negative numbers ** . Negative numbers have not been used much for a long time. Only in the 19th century did the Italian Pisano begin to actively use them. He was a merchant and fixed his debts with their help.

** 7. How to win the lottery ** . In the early 1990s, Australian enthusiasts teamed up to win $27 million in the lottery. The cost of each lottery ticket was $1, while the number of possible combinations was more than 7 million. They established a fund for the same number of tickets, in which 2,500 people invested $3,000. As a result, they were expected to win. Each received $9,000.

** 8. The largest number in the world is **. This is a centillion. It’s not easy to write it down. It’s a one followed by 600 zeros.

Zero cannot be written in Roman numerals. For example, 20 is XX.

** 9. Nature is mathematics ** . Many have heard of the Fibonacci sequence. This is a special order of numbers. If you add two adjacent numbers, you get the following. Examples of embodiments of this sequence are found in nature. For example, plant seeds are often arranged in a spiral that runs from the center outwards. Sunflower seeds mimic this mathematical series.

** 10. The smallest number is ** . There is the smallest number in the world — a decimal fraction, where there are 100 million trillion trillion trillion zeros before one, after the decimal point before one. It is used to calculate the probability of the emergence of a new universe from an atom.

** 11. About the unusualness of the seven **. Seven is the only number from the first ten that cannot be divided or multiplied so that it is preserved within this chain. For example, multiplying 5 by 2 gives 10. 8 and 6 are divisible by 2.

Hypatia, who lived in Alexandria in the 5th century, is recognized as the first known female mathematician in history.

** 12. Funny Five ** . 5 is the most «funny» number in Thai. It is pronounced as «ha». In slang, there is even the phrase «555», which means laughter.

** 13. A mathematician, and then a writer of fairy tales ** . The writer Lewis Carroll was actually named Charles Lutwidge Dodgson. Early in his career, he was an obscure English mathematician.

** 14. Calculated my date of death ** . One of the English mathematicians managed to calculate the date of his death. Once Abraham de Moivre noticed that every day he sleeps 15 minutes more. As a mathematician, he decided to calculate the progression. As a result of calculations, he identified the date when the duration of his sleep will reach 24 hours. It turned out November 27, 1754. The scientist died on this very day.

** 15. Funny statistics ** . It was found that, having collected a group of 23 people, the probability that two of them have the same day and month of birth is above 50%. If the number of people exceeds 60, the probability will be almost 99%.

** 16. Algebra ** . The name «algebra» sounds the same in any language. This Arabic word appeared at the turn of the 8th — 9th centuries. It was first used in his mathematical treatise by Mahammed ibn Musa al-Khwarizmi, a scientist who lived in Central Asia.

** 17. About the unlucky number of Italians **. They are quite superstitious when it comes to the number 17. The roots of this go way back. In ancient Rome, it was customary to write the words «I am no more» on tombstones. The inscription was a combination of the numbers 6 and 11 (VIXI). Their sum is 17.

** 18. How to solve the unsolvable ** . One of the famous American mathematicians, George Dantzig, was late for the beginning of his lecture as a student. Entering the classroom, he rewrote the equations written on the blackboard, believing that this was homework. At home, Danzig solved them with great difficulty. Later it turned out that these were «unsolvable» equations from statistics. The best mathematical minds could not cope with them for years.

In Western mathematical literature, zero belongs to natural numbers, but in Russian it is not.

** 19. About ancient finds ** . The oldest work in mathematics is about 37,000 years old. These are dashes carved by an ancient man on the bones of a baboon. So did the ancient people for the convenience and clarity of the calculation. The bone was found in South Africa (Swaziland). The oldest records of prime numbers were also carved into bones. Their age is approximately 19,000 years.

** 20. How ** started counting. Why is the generally accepted number system decimal? The answer is that it was initially convenient for a person to use fingers to count something — there are 10 of them on his hands. But a person’s ability to abstract count appeared a little later. The ancient inhabitants of Babylon used a different system of calculation. They had it in sixties. That is why until now a minute is 60 seconds, an hour is 60 minutes, and in a circle there are 360 degrees.

** 21. The equal sign only appeared in the 16th century ** . The sign «=», meaning equality, was coined by the Englishman Robert Record. The mathematician first used this sign in 1557.

** 22. Ants have mathematical abilities ** . They can perform simple calculations and simple arithmetic operations. Scout ants, having found food in the labyrinth created by them and their relatives, are able to transmit information about its location. They are able to explain to other ants how to find food.

** 23. Newton made mistakes ** . The most famous mathematical work of Isaac Newton was written with errors in the calculations. But they were noticed only 300 years after the release of the «Mathematical Principles of Natural Philosophy».

** 24. How long does an instant ** last. It turns out that a moment is a real unit of time calculation. It lasts one hundredth of a second.

** 25. Problem ** . Multiply your age by 7. Multiply the resulting number by 1443. The result is your age written 3 times in a row. This works for any age.

If you add up all the numbers from one to a hundred, you get 5050.

** 26. How to check money **. Using the serial number of a euro bill, you can determine whether it is genuine. The serial number is one letter followed by 11 digits. Change the letter to a number representing the serial number of this letter in the alphabet.