Equal Sign & True/False Equations — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. 4 + 5 = 9
4 + 5 is 9, so 5 makes the equation true.
2. 5 + 3 = 8
5 + 3 is 8, so the missing number is 5.
3. 7 = 2 + 5
2 + 5 is 7, matching the left side.
4. 6 = 2 + 4
2 + 4 is 6, so 2 is missing.
5. 3 + 7 = 10
3 + 7 is 10, so 7 makes it true.
6. 3 + 6 = 9
3 + 6 is 9, so the missing number is 3.
7. 8 = 4 + 4
4 + 4 is 8, equal to the left.
8. 5 + 2 = 7
5 + 2 is 7, making both sides equal.
9. 8 = 3 + 5
3 + 5 is 8, so the left must be 8.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
___ + 2 = 6
→ 4
4
3 + ___ = 10
→ 7
7
8 = 5 + ___
→ 3
3
___ = 4 + 5
→ 9
9
Each blank becomes the number that makes the left and right totals the same.