Let’s solve each problem one by one. We’re adding three integers — some positive, some negative. Remember:
- Adding a negative is like subtracting.
- You can add in any order (commutative property).
- Group positives together and negatives together to make it easier.
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1) 7 + 18 + (-11)
First, add the positives: 7 + 18 = 25
Then add the negative: 25 + (-11) = 25 - 11 =
14
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2) -12 + (-4) + (-17)
All are negative. Add their absolute values: 12 + 4 + 17 = 33
Since all are negative, answer is
-33
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3) 21 + 2 + 12
All positive: 21 + 2 = 23; 23 + 12 =
35
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4) 6 + (-15) + 1
Add positives first: 6 + 1 = 7
Then add negative: 7 + (-15) = 7 - 15 =
-8
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5) 8 + (-24) + (-14)
Positives: 8
Negatives: -24 + (-14) = -38
Now: 8 + (-38) = 8 - 38 =
-30
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6) -7 + 13 + (-2)
Positives: 13
Negatives: -7 + (-2) = -9
Now: 13 + (-9) = 13 - 9 =
4
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7) 16 + (-1) + 11
Positives: 16 + 11 = 27
Add negative: 27 + (-1) = 27 - 1 =
26
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8) -5 + (-16) + 3
Negatives: -5 + (-16) = -21
Add positive: -21 + 3 =
-18
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9) -9 + 10 + 14
Positives: 10 + 14 = 24
Add negative: 24 + (-9) = 24 - 9 =
15
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10) 20 + 17 + (-19)
Positives: 20 + 17 = 37
Add negative: 37 + (-19) = 37 - 19 =
18
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Final Answer:
1) 14
2) -33
3) 35
4) -8
5) -30
6) 4
7) 26
8) -18
9) 15
10) 18
Parent Tip: Review the logic above to help your child master the concept of adding integers worksheet pdf.
