Multiply 100 and 1-digit numbers worksheet for elementary math practice.

Let's solve the multiplication problems on this worksheet. The task is to multiply 100 by a 1-digit number (or vice versa). Remember:

> Multiplying any number by 100 adds two zeros to the end of that number.

So, for example:
- $ 6 \times 100 = 600 $
- $ 1 \times 100 = 100 $
- $ 100 \times 3 = 300 $

Now let’s go through each problem step by step.

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First Row

1. $ 6 \times 100 = 600 $
2. $ 1 \times 100 = 100 $
3. $ 100 \times 1 = 100 $
4. $ 100 \times 5 = 500 $

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Second Row

5. $ 100 \times 3 = 300 $
6. $ 3 \times 100 = 300 $
7. $ 100 \times 7 = 700 $
8. $ 7 \times 100 = 700 $

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Third Row

9. $ 100 \times 4 = 400 $
10. $ 4 \times 100 = 400 $
11. $ 100 \times 9 = 900 $
12. $ 100 \times 2 = 200 $

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Fourth Row

13. $ 9 \times 100 = 900 $
14. $ 5 \times 100 = 500 $
15. $ 8 \times 100 = 800 $
16. $ 100 \times 8 = 800 $

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✔ Final Answers (in order):

| Problem | Answer |
|--------|--------|
| 6 × 100 | 600 |
| 1 × 100 | 100 |
| 100 × 1 | 100 |
| 100 × 5 | 500 |
| 100 × 3 | 300 |
| 3 × 100 | 300 |
| 100 × 7 | 700 |
| 7 × 100 | 700 |
| 100 × 4 | 400 |
| 4 × 100 | 400 |
| 100 × 9 | 900 |
| 100 × 2 | 200 |
| 9 × 100 | 900 |
| 5 × 100 | 500 |
| 8 × 100 | 800 |
| 100 × 8 | 800 |

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🔍 Explanation:

When you multiply any number by 100, you're essentially shifting the digits two places to the left and adding two zeros. This is because:
- $ 100 = 10^2 $
- So multiplying by 100 is like multiplying by 10 twice.

For instance:
- $ 6 \times 100 = 6 \times 10 \times 10 = 60 \times 10 = 600 $

This rule applies regardless of whether it's written as $ n \times 100 $ or $ 100 \times n $. Multiplication is commutative.

✔ So all answers follow the pattern:
"The 1-digit number followed by two zeros."

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Let me know if you'd like this printed or formatted as a completed worksheet!