Let's solve each subtraction problem step by step. The key rule to remember when subtracting integers is:
>
Subtracting a negative number is the same as adding a positive number.
> So:
> $ a - (-b) = a + b $
Also, keep in mind:
- Subtracting a positive number is just regular subtraction.
- When dealing with negative numbers, use the rules of signed numbers.
We’ll go through each problem one by one.
---
Row 1
1. $ 77 - 25 = 52 $
2. $ (-96) - (-88) = -96 + 88 = -8 $
3. $ 35 - 74 = -39 $
---
Row 2
4. $ 79 - (-43) = 79 + 43 = 122 $
5. $ 3 - (-43) = 3 + 43 = 46 $
6. $ 58 - 86 = -28 $
---
Row 3
7. $ 64 - (-37) = 64 + 37 = 101 $
8. $ (-76) - (-26) = -76 + 26 = -50 $
9. $ 20 - 1 = 19 $
---
Row 4
10. $ 18 - (-80) = 18 + 80 = 98 $
11. $ 17 - (-38) = 17 + 38 = 55 $
12. $ 50 - 98 = -48 $
---
Row 5
13. $ (-25) - 19 = -25 - 19 = -44 $
14. $ (-52) - (-4) = -52 + 4 = -48 $
15. $ (-9) - (-14) = -9 + 14 = 5 $
---
Row 6
16. $ 53 - (-57) = 53 + 57 = 110 $
17. $ (-59) - 35 = -59 - 35 = -94 $
18. $ 86 - 25 = 61 $
---
Row 7
19. $ (-15) - (-98) = -15 + 98 = 83 $
20. $ 46 - (-58) = 46 + 58 = 104 $
21. $ (-91) - (-64) = -91 + 64 = -27 $
---
Row 8
22. $ 98 - 91 = 7 $
23. $ 33 - 22 = 11 $
24. $ 21 - 86 = -65 $
---
Row 9
25. $ (-2) - (-25) = -2 + 25 = 23 $
26. $ (-43) - 62 = -43 - 62 = -105 $
27. $ 73 - (-93) = 73 + 93 = 166 $
---
Row 10
28. $ (-63) - 44 = -63 - 44 = -107 $
29. $ 37 - 8 = 29 $
30. $ 25 - (-15) = 25 + 15 = 40 $
---
✔ Final Answers (in order):
```
52 -8 -39
122 46 -28
101 -50 19
98 55 -48
-44 -48 5
110 -94 61
83 104 -27
7 11 -65
23 -105 166
-107 29 40
```
---
🔍 Explanation Summary:
-
Subtracting a negative number: Turn it into addition (e.g., $ a - (-b) = a + b $)
-
Subtracting a positive number: Just subtract normally
-
Negative minus positive: Makes the result more negative
-
Positive minus larger positive: Result is negative
This method applies universally for integer subtraction.
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Parent Tip: Review the logic above to help your child master the concept of subtracting integers worksheet with answers.