Math worksheet using number lines to solve addition problems.

Let's solve each addition problem using the number line method as shown in the worksheet.

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1. 9 + 1 = ?

- Start at 9 on the number line.
- Move 1 step to the right (since we are adding 1).
- You land on 10.

✔ Answer: 10

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2. 13 + 2 = ?

- Start at 13 on the number line.
- Move 2 steps to the right.
- First step: 14, second step: 15.

✔ Answer: 15

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3. 5 + 10 = ?

- Start at 5.
- Move 10 steps to the right.
- Counting: 6, 7, 8, 9, 10, 11, 12, 13, 14, 15.

✔ Answer: 15

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4. 1 + 17 = ?

- Start at 1.
- Move 17 steps to the right.
- Counting forward: 2, 3, ..., up to 18.

✔ Answer: 18

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5. 4 + 9 = ?

- Start at 4.
- Move 9 steps to the right.
- Counting: 5, 6, 7, 8, 9, 10, 11, 12, 13.

✔ Answer: 13

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✔ Final Answers:

1. 9 + 1 = 10
2. 13 + 2 = 15
3. 5 + 10 = 15
4. 1 + 17 = 18
5. 4 + 9 = 13

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📌 How to Use the Number Line:

- Always start at the first number.
- Move to the right for addition (each step is +1).
- The number you land on is the sum.

This visual method helps understand how numbers grow when added together!