Number Line Worksheets - Free Printable

Let’s solve each problem step by step using the number line idea — even though we won’t draw it, we’ll imagine moving left or right.

Remember:
- Adding a negative number means move LEFT on the number line.
- Adding a positive number means move RIGHT on the number line.

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a. -3 + 7 = ?

Start at -3. 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 left.
-1 → -2 → -3
✔ Answer: -3

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d. 6 + (-4) = ?

Start at 6. Add -4 → move 4 steps left.
6 → 5 → 4 → 3 → 2
✔ Answer: 2

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e. -6 + 12 = ?

Start at -6. Add 12 → move 12 steps 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 left.
0 → -1
✔ Answer: -1

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Final Answer:
a. 4
b. -3
c. -3
d. 2
e. 6
f. -1