Double Digit Multiplication Worksheets - Math Monks - Free Printable

Problem Description:

The task involves solving a series of double-digit multiplication problems. Each problem consists of two two-digit numbers that need to be multiplied. The goal is to compute the product for each pair.

Solution Approach:

We will solve each multiplication problem step by step using the standard algorithm for multiplication. Here's the general process:
1. Multiply the ones digit of the second number by the first number.
2. Multiply the tens digit of the second number by the first number, and shift the result one place to the left (i.e., multiply by 10).
3. Add the results from steps 1 and 2 to get the final product.

Let's solve each problem systematically.

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Row 1:

1. 26 × 62
- Step 1: \( 26 \times 2 = 52 \)
- Step 2: \( 26 \times 60 = 1560 \)
- Step 3: \( 52 + 1560 = 1612 \)
- Answer: 1612

2. 98 × 80
- Step 1: \( 98 \times 80 = 7840 \) (since multiplying by 80 is the same as multiplying by 8 and then by 10)
- Answer: 7840

3. 19 × 27
- Step 1: \( 19 \times 7 = 133 \)
- Step 2: \( 19 \times 20 = 380 \)
- Step 3: \( 133 + 380 = 513 \)
- Answer: 513

4. 66 × 24
- Step 1: \( 66 \times 4 = 264 \)
- Step 2: \( 66 \times 20 = 1320 \)
- Step 3: \( 264 + 1320 = 1584 \)
- Answer: 1584

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Row 2:

5. 76 × 27
- Step 1: \( 76 \times 7 = 532 \)
- Step 2: \( 76 \times 20 = 1520 \)
- Step 3: \( 532 + 1520 = 2052 \)
- Answer: 2052

6. 86 × 21
- Step 1: \( 86 \times 1 = 86 \)
- Step 2: \( 86 \times 20 = 1720 \)
- Step 3: \( 86 + 1720 = 1806 \)
- Answer: 1806

7. 63 × 30
- Step 1: \( 63 \times 30 = 1890 \) (since multiplying by 30 is the same as multiplying by 3 and then by 10)
- Answer: 1890

8. 79 × 80
- Step 1: \( 79 \times 80 = 6320 \) (since multiplying by 80 is the same as multiplying by 8 and then by 10)
- Answer: 6320

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Row 3:

9. 34 × 70
- Step 1: \( 34 \times 70 = 2380 \) (since multiplying by 70 is the same as multiplying by 7 and then by 10)
- Answer: 2380

10. 53 × 34
- Step 1: \( 53 \times 4 = 212 \)
- Step 2: \( 53 \times 30 = 1590 \)
- Step 3: \( 212 + 1590 = 1802 \)
- Answer: 1802

11. 18 × 27
- Step 1: \( 18 \times 7 = 126 \)
- Step 2: \( 18 \times 20 = 360 \)
- Step 3: \( 126 + 360 = 486 \)
- Answer: 486

12. 31 × 14
- Step 1: \( 31 \times 4 = 124 \)
- Step 2: \( 31 \times 10 = 310 \)
- Step 3: \( 124 + 310 = 434 \)
- Answer: 434

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Row 4:

13. 22 × 23
- Step 1: \( 22 \times 3 = 66 \)
- Step 2: \( 22 \times 20 = 440 \)
- Step 3: \( 66 + 440 = 506 \)
- Answer: 506

14. 78 × 24
- Step 1: \( 78 \times 4 = 312 \)
- Step 2: \( 78 \times 20 = 1560 \)
- Step 3: \( 312 + 1560 = 1872 \)
- Answer: 1872

15. 93 × 39
- Step 1: \( 93 \times 9 = 837 \)
- Step 2: \( 93 \times 30 = 2790 \)
- Step 3: \( 837 + 2790 = 3627 \)
- Answer: 3627

16. 62 × 74
- Step 1: \( 62 \times 4 = 248 \)
- Step 2: \( 62 \times 70 = 4340 \)
- Step 3: \( 248 + 4340 = 4588 \)
- Answer: 4588

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Row 5:

17. 73 × 11
- Step 1: \( 73 \times 11 = 73 \times (10 + 1) = 730 + 73 = 803 \)
- Answer: 803

18. 25 × 45
- Step 1: \( 25 \times 5 = 125 \)
- Step 2: \( 25 \times 40 = 1000 \)
- Step 3: \( 125 + 1000 = 1125 \)
- Answer: 1125

19. 86 × 21
- Step 1: \( 86 \times 1 = 86 \)
- Step 2: \( 86 \times 20 = 1720 \)
- Step 3: \( 86 + 1720 = 1806 \)
- Answer: 1806

20. 70 × 34
- Step 1: \( 70 \times 4 = 280 \)
- Step 2: \( 70 \times 30 = 2100 \)
- Step 3: \( 280 + 2100 = 2380 \)
- Answer: 2380

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Final Answers:

\[
\boxed{
\begin{array}{cccc}
1612 & 7840 & 513 & 1584 \\
2052 & 1806 & 1890 & 6320 \\
2380 & 1802 & 486 & 434 \\
506 & 1872 & 3627 & 4588 \\
803 & 1125 & 1806 & 2380 \\
\end{array}
}
\]