Let’s solve each problem step by step using the number line idea — moving right for positive numbers, left for negative numbers.
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a. -3 + 7 = ?
Start at -3 on the number line.
Add 7 → move 7 steps to the right.
-3 → -2 → -1 → 0 → 1 → 2 → 3 → 4
✔ Answer:
4
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b. 2 + (-5) = ?
Start at 2.
Add -5 → move 5 steps to the left.
2 → 1 → 0 → -1 → -2 → -3
✔ Answer:
-3
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c. -1 + (-2) = ?
Start at -1.
Add -2 → move 2 steps to the left.
-1 → -2 → -3
✔ Answer:
-3
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d. 6 + (-4) = ?
Start at 6.
Add -4 → move 4 steps to the left.
6 → 5 → 4 → 3 → 2
✔ Answer:
2
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e. -6 + 12 = ?
Start at -6.
Add 12 → move 12 steps to the right.
-6 → -5 → -4 → -3 → -2 → -1 → 0 → 1 → 2 → 3 → 4 → 5 → 6
✔ Answer:
6
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f. 0 + (-1) = ?
Start at 0.
Add -1 → move 1 step to the left.
0 → -1
✔ Answer:
-1
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Final Answer:
a. 4
b. -3
c. -3
d. 2
e. 6
f. -1
Parent Tip: Review the logic above to help your child master the concept of integers worksheet pdf.
