Subtraction within 10 — Answer Key
Part A: Fill in the Missing Number
Write the missing number to complete each number sentence.
1. 9 - 5 = 4
Since 9 - ___ = 4, the missing number is 9 - 4 = 5.
2. 8 - 3 = 5
Since ___ - 3 = 5, the missing number is 3 + 5 = 8.
3. 10 - 4 = 6
Since 10 - ___ = 6, the missing number is 10 - 6 = 4.
4. 9 - 2 = 7
Since ___ - 2 = 7, the missing number is 2 + 7 = 9.
5. 8 - 5 = 3
Since 8 - ___ = 3, the missing number is 8 - 3 = 5.
6. 10 - 4 = 6
Since ___ - 4 = 6, the missing number is 4 + 6 = 10.
7. 7 - 6 = 1
Since 7 - ___ = 1, the missing number is 7 - 1 = 6.
8. 8 - 5 = 3
Since ___ - 5 = 3, the missing number is 5 + 3 = 8.
9. 10 - 8 = 2
Since 10 - ___ = 2, the missing number is 10 - 2 = 8.
Part B: Match the Equation to Its Answer
Draw a line to match each subtraction problem to its answer.
1.
10 - 3
→ 7
5
8 - 2
→ 6
6
7 - 4
→ 3
7
6 - 1
→ 5
3
Match each subtraction to its difference: 10 - 3 = 7, 8 - 2 = 6, 7 - 4 = 3, 6 - 1 = 5.