Checking Subtraction Using Addition ✓
Instructions: Solve each subtraction problem. Then check your answer by adding. If your subtraction is correct, the addition should equal the starting number!
Remember: If a − b = c, then c + b = a
Example:
45 − 23 = 22
Check: 22 + 23 = 45 ✓
1. 67 − 34 = ________________
Check: ________ + 34 = 67
2. 83 − 51 = ________________
Check: ________ + 51 = 83
3. 92 − 47 = ________________
Check: ________ + 47 = 92
4. 156 − 89 = ________________
Check: ________ + 89 = 156
5. 214 − 126 = ________________
Check: ________ + 126 = 214
6. 305 − 178 = ________________
Check: ________ + 178 = 305
7. 420 − 265 = ________________
Check: ________ + 265 = 420
8. 501 − 347 = ________________
Check: ________ + 347 = 501
🌟 Challenge:
A shop had 624 apples. They sold 378 apples. How many apples are left?
Answer: ________________ apples
Check your answer: ________ + 378 = 624