Addition and Subtraction Fluency Within 20: math practice, Grade 2 – download the PDF

1 Doubles ★★★

Find each double.

1. \(6+6\)
2. \(9+9\)
3. \(7+7\)
4. \(10+10\)

2 Make ten ★★★

Fill in the number that makes ten.

1. \(8+\square=10\)
2. \(7+\square=10\)
3. \(6+\square=10\)

Then use a ten to solve \(9+4\).

3 Related facts ★★★

You know that \(7+6=13\). Write two subtraction facts that use the same numbers.

4 Even or odd? ★★★

Write even or odd for each number: 12, 15, 18, 7, 20, 13.

5 Missing addends ★★★

Find the missing number.

1. \(6+\square=11\)
2. \(8+\square=15\)
3. \(\square+9=17\)

6 Three numbers ★★★

Find \(4+3+6\). Look for two numbers that make ten.

7 Sticker book ★★★

Maya has 7 red stickers and 8 blue stickers. How many stickers does she have in all?

8 Near doubles ★★★

Use a double to find \(6+7\). Write the double you used.

9 Fact family ★★★

Write the four facts in the fact family for 5, 9, and 14.

10 True or false? ★★★

Tell if each sentence is true or false. Explain.

1. \(8+8=16\)
2. \(7+8=14\)
3. \(13-6=8\)
4. \(9+5=5+9\)

11 Muffin tray ★★★

A bakery tray holds 18 muffins. The baker sells 9 of them. How many muffins are left? Use a double to help.

12 Trading cards ★★★

Leo wants 16 trading cards. He has 9 now. How many more cards does he need?

13 Three addends, two ways ★★★

Find each sum.

1. \(5+8+5\)
2. \(6+7+4\)

14 Pairs ★★★

Is \(9+8\) even or odd? Use what you know about pairs and a near double to explain.

15 Think addition ★★★

Use an addition fact to solve each subtraction.

1. \(16-9\)
2. \(14-8\)

16 Pick a strategy ★★★

Find \(7+9\) using the make ten strategy. Show your steps.

17 Pairs that make 13 ★★★

Use the numbers 4, 5, 6, 7, 8, and 9. Find every pair of different numbers whose sum is 13.

18 At the zoo ★★★

A zoo has 8 monkeys, 6 parrots, and 4 turtles in a play area. Then 9 animals go inside. How many animals are still outside?

19 Missing addend with three numbers ★★★

Find the missing number: \(7+\square+5=20\).

20 Number riddles ★★★

Solve the riddles.

1. Two numbers 1 apart add up to 15. What are they?
2. Two numbers 1 apart add up to 19. What are they?

21 Find the mistake ★★★

Sam says that \(14-6=7\) because he counted. Is he right? Check with addition and give the correct answer.

22 Sharing fairly ★★★

Two friends share some cookies equally with none left over. Can they share 15 cookies this way? Can they share 14 cookies? Explain.

23 Balance the equation ★★★

Find the number that makes the sentence true: \(9+\square=6+8\).

24 Bus ride ★★★

There are 9 children on a bus. At the first stop, 7 get on. At the second stop, 5 get off. How many children are on the bus now?