Let’s solve each problem step by step. We’ll go one at a time, carefully adding and subtracting integers (positive and negative numbers).
Remember:
- Adding a positive number → move right on the number line.
- Adding a negative number → same as subtracting that number.
- Subtracting a negative number → same as adding that number.
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1) -9 + 19 + 13
Start with -9 + 19 = 10
Then 10 + 13 =
23
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2) 12 + (-4) + (-15)
12 + (-4) = 8
8 + (-15) = 8 - 15 =
-7
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3) 0 + 14 - (-8)
Subtracting a negative is like adding:
0 + 14 + 8 =
22
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4) -17 + (-3) + (-9)
Add all negatives:
-17 -3 = -20
-20 -9 =
-29
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5) 19 - 3 + 0
19 - 3 = 16
16 + 0 =
16
---
6) 2 + 3 - (-9)
2 + 3 = 5
Minus negative 9 → plus 9 → 5 + 9 =
14
---
7) -19 + 8 + (-6)
-19 + 8 = -11
-11 + (-6) = -11 -6 =
-17
---
8) -10 - (-20) + (-4)
-10 minus negative 20 → -10 + 20 = 10
10 + (-4) = 10 - 4 =
6
---
9) -13 + (-19) + (-10)
All negatives:
-13 -19 = -32
-32 -10 =
-42
---
10) -16 + (-1) + (-7)
-16 -1 = -17
-17 -7 =
-24
---
11) -1 - 5 + 20
-1 -5 = -6
-6 + 20 =
14
---
12) 18 - (-2) + (-20)
18 minus negative 2 → 18 + 2 = 20
20 + (-20) = 20 - 20 =
0
---
13) 14 - 14 + 14
14 - 14 = 0
0 + 14 =
14
---
14) 13 + 5 - 7
13 + 5 = 18
18 - 7 =
11
---
15) 14 - 19 + 2
14 - 19 = -5
-5 + 2 =
-3
---
16) 2 - 19 - (-18)
2 - 19 = -17
Minus negative 18 → -17 + 18 =
1
---
17) -5 + (-12) - 6
-5 -12 = -17
-17 -6 =
-23
---
18) -7 + (-17) + (-5)
-7 -17 = -24
-24 -5 =
-29
---
19) -7 + (-4) - 9
-7 -4 = -11
-11 -9 =
-20
---
20) -15 + 0 - (-18)
-15 + 0 = -15
Minus negative 18 → -15 + 18 =
3
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Final Answer:
1) 23
2) -7
3) 22
4) -29
5) 16
6) 14
7) -17
8) 6
9) -42
10) -24
11) 14
12) 0
13) 14
14) 11
15) -3
16) 1
17) -23
18) -29
19) -20
20) 3
Parent Tip: Review the logic above to help your child master the concept of integers adding and subtracting worksheet.