Double-Digit Math Worksheet for 7-Year-Olds

Instructions

1. Read each problem carefully.
2. For addition and subtraction, line up the ones and tens places.
3. Show your work. You may use drawings, cubes, or a number line.
4. Complete the practice sections in order. The last section is an optional challenge.

Helpful example:

34

• 25

  59

Add the ones: 4 + 5 = 9. Add the tens: 3 + 2 = 5.

1. Tens and Ones

Write the tens digit and the ones digit for each number.

1. 27: Tens: Ones:
2. 64: Tens: Ones:
3. 90: Tens: Ones:
4. 38: Tens: Ones:
5. 71: Tens: Ones:

2. Build the Number

Write the two-digit number described by each clue.

1. 5 tens and 2 ones = _____
2. 8 tens and 6 ones = _____
3. 3 tens and 0 ones = _____
4. 9 tens and 4 ones = _____
5. 1 ten and 7 ones = _____

3. Add Two-Digit Numbers

Add. Remember to start with the ones place.

1. 23 + 14 = _____
2. 42 + 35 = _____
3. 51 + 28 = _____
4. 67 + 12 = _____
5. 36 + 47 = _____
6. 58 + 24 = _____

Hint: If the ones add up to 10 or more, regroup 10 ones as 1 ten.

4. Subtract Two-Digit Numbers

Subtract. Line up the tens and ones.

1. 45 − 23 = _____
2. 78 − 36 = _____
3. 69 − 14 = _____
4. 84 − 52 = _____
5. 53 − 27 = _____
6. 91 − 46 = _____

Hint: If the top ones digit is too small, regroup 1 ten as 10 ones.

5. Choose the Correct Sign

Write >, <, or = in each box.

1. 42 _____ 24
2. 57 _____ 75
3. 63 _____ 63
4. 89 _____ 98
5. 31 _____ 13
6. 76 _____ 67

6. Math at the Snack Stand

Use addition or subtraction to solve each problem. Show your work.

1. Mia has 24 apple slices. Her friend gives her 15 more. How many apple slices does Mia have now?

Answer: _____ apple slices

2. A snack stand has 68 crackers. Children eat 25 crackers. How many crackers are left?

Answer: _____ crackers

3. There are 37 red cups and 26 blue cups. How many cups are there altogether?

Answer: _____ cups

4. A basket holds 82 oranges. The shop sells 39 oranges. How many oranges remain?

Answer: _____ oranges

7. Find the Missing Number

Write the number that makes each equation true.

1. 24 + _____ = 39
2. _____ + 16 = 51
3. 72 − _____ = 40
4. _____ − 28 = 45
5. 35 + _____ = 63
6. 90 − _____ = 54

8. Make Your Own

Use the digits 2, 5, 7, and 8. Use each digit only once.

1. Make the greatest two-digit number: _____
2. Make the smallest two-digit number: _____
3. Add your greatest and smallest numbers: _____
4. Subtract your smallest number from your greatest number: _____

Optional Challenge

1. I am a two-digit number. I have 6 tens. My ones digit is 3 more than my tens digit. What number am I?

Answer: _____

2. Use the digits 1, 4, 6, and 9 to make two two-digit numbers. Make the sum as large as possible.

+ = _____

3. Sam says that 48 + 27 = 65. Is Sam correct? Explain how you know.

Answer Key

1. Tens and Ones

1. 27: 2 tens, 7 ones
2. 64: 6 tens, 4 ones
3. 90: 9 tens, 0 ones
4. 38: 3 tens, 8 ones
5. 71: 7 tens, 1 one

2. Build the Number

1. 52
2. 86
3. 30
4. 94
5. 17

3. Add Two-Digit Numbers

1. 37
2. 77
3. 79
4. 79
5. 83
6. 82

4. Subtract Two-Digit Numbers

1. 22
2. 42
3. 55
4. 32
5. 26
6. 45

5. Choose the Correct Sign

1. 42 > 24
2. 57 < 75
3. 63 = 63
4. 89 < 98
5. 31 > 13
6. 76 > 67

6. Math at the Snack Stand

1. 39 apple slices
2. 43 crackers
3. 63 cups
4. 43 oranges

7. Find the Missing Number

1. 15
2. 35
3. 32
4. 73
5. 28
6. 36

8. Make Your Own

1. 87
2. 25
3. 112
4. 62

Optional Challenge

1. 69
2. 96 + 41 = 137
3. No. 48 + 27 = 75. Sam forgot to regroup 10 ones as 1 ten, or the correct addition can be shown as 8 + 7 = 15 and 4 + 2 + 1 = 7.