Let’s work through the problems step by step. Since there are 45 problems, I’ll solve them in groups to keep things clear and accurate.
We’re subtracting positive and negative numbers. Remember:
- Subtracting a negative is like adding:
→ a - (-b) = a + b
- Subtracting a positive is just regular subtraction:
→ a - (+b) = a - b
Let’s go problem by problem:
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Group 1 (Problems 1–10):
1) 5 - (-10) = 5 + 10 =
15
2) 2 - (-12) = 2 + 12 =
14
3) 9 - 0 =
9
4) -3 - 2 = -3 - 2 =
-5
5) 3 - (-12) = 3 + 12 =
15
6) 6 - (-2) = 6 + 2 =
8
7) -5 - 3 = -5 - 3 =
-8
8) -2 - (-12) = -2 + 12 =
10
9) -11 - 11 = -11 - 11 =
-22
10) -1 - 15 = -1 - 15 =
-16
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Group 2 (Problems 11–20):
11) -1 - 15 = -1 - 15 =
-16 *(same as #10)*
12) 11 - 9 =
2
13) 12 - (-3) = 12 + 3 =
15
14) 13 - 4 =
9
15) 6 - (-5) = 6 + 5 =
11
16) -1 - (-13) = -1 + 13 =
12
17) -12 - (-4) = -12 + 4 =
-8
18) 10 - (-11) = 10 + 11 =
21
19) -15 - (-12) = -15 + 12 =
-3
20) 12 - (-2) = 12 + 2 =
14
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Group 3 (Problems 21–30):
21) 11 - 4 =
7
22) 12 - (-12) = 12 + 12 =
24
23) -2 - (-2) = -2 + 2 =
0
24) -6 - (-3) = -6 + 3 =
-3
25) 12 - 5 =
7
26) -3 - 12 = -3 - 12 =
-15
27) 8 - 4 =
4
28) 12 - (-1) = 12 + 1 =
13
29) 15 - (-4) = 15 + 4 =
19
30) 10 - (-8) = 10 + 8 =
18
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Group 4 (Problems 31–40):
31) -3 - (-5) = -3 + 5 =
2
32) 7 - (-12) = 7 + 12 =
19
33) 1 - (-12) = 1 + 12 =
13
34) 8 - (-10) = 8 + 10 =
18
35) 4 - 4 =
0
36) 6 - 5 =
1
37) -11 - (-13) = -11 + 13 =
2
38) -11 - (-2) = -11 + 2 =
-9
39) -2 - (-3) = -2 + 3 =
1
40) 7 - 7 =
0
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Group 5 (Problems 41–45):
41) 2 - (-10) = 2 + 10 =
12
42) 4 - (-12) = 4 + 12 =
16
43) 6 - (-12) = 6 + 12 =
18
44) -14 - 12 = -14 - 12 =
-26
45) -10 - 3 = -10 - 3 =
-13
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✔ All calculations checked.
Final Answer:
15, 14, 9, -5, 15, 8, -8, 10, -22, -16, -16, 2, 15, 9, 11, 12, -8, 21, -3, 14, 7, 24, 0, -3, 7, -15, 4, 13, 19, 18, 2, 19, 13, 18, 0, 1, 2, -9, 1, 0, 12, 16, 18, -26, -13
Parent Tip: Review the logic above to help your child master the concept of adding signed numbers worksheet.
