Multiplication Worksheets: (2-Digit by 1-Digit Math Drills) - DIY ... - Free Printable

Problem Description:

The task involves solving a series of multiplication problems where a 2-digit number is multiplied by a 1-digit number (specifically, 4). The goal is to compute each product accurately.

Solution Approach:

We will solve each multiplication problem step by step. The general method for multiplying a 2-digit number by a 1-digit number is as follows:
1. Multiply the ones digit of the 2-digit number by the 1-digit number.
2. Multiply the tens digit of the 2-digit number by the 1-digit number.
3. Add the results from steps 1 and 2, carrying over any tens digit as necessary.

Let's solve each problem:

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#### Row 1:
1. 17 × 4
- \( 7 \times 4 = 28 \)
- \( 10 \times 4 = 40 \)
- \( 40 + 28 = 68 \)
- Answer: 68

2. 76 × 4
- \( 6 \times 4 = 24 \)
- \( 70 \times 4 = 280 \)
- \( 280 + 24 = 304 \)
- Answer: 304

3. 68 × 4
- \( 8 \times 4 = 32 \)
- \( 60 \times 4 = 240 \)
- \( 240 + 32 = 272 \)
- Answer: 272

4. 41 × 4
- \( 1 \times 4 = 4 \)
- \( 40 \times 4 = 160 \)
- \( 160 + 4 = 164 \)
- Answer: 164

5. 23 × 4
- \( 3 \times 4 = 12 \)
- \( 20 \times 4 = 80 \)
- \( 80 + 12 = 92 \)
- Answer: 92

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#### Row 2:
1. 90 × 4
- \( 0 \times 4 = 0 \)
- \( 90 \times 4 = 360 \)
- \( 360 + 0 = 360 \)
- Answer: 360

2. 92 × 4
- \( 2 \times 4 = 8 \)
- \( 90 \times 4 = 360 \)
- \( 360 + 8 = 368 \)
- Answer: 368

3. 58 × 4
- \( 8 \times 4 = 32 \)
- \( 50 \times 4 = 200 \)
- \( 200 + 32 = 232 \)
- Answer: 232

4. 20 × 4
- \( 0 \times 4 = 0 \)
- \( 20 \times 4 = 80 \)
- \( 80 + 0 = 80 \)
- Answer: 80

5. 62 × 4
- \( 2 \times 4 = 8 \)
- \( 60 \times 4 = 240 \)
- \( 240 + 8 = 248 \)
- Answer: 248

---

#### Row 3:
1. 92 × 4
- \( 2 \times 4 = 8 \)
- \( 90 \times 4 = 360 \)
- \( 360 + 8 = 368 \)
- Answer: 368

2. 45 × 4
- \( 5 \times 4 = 20 \)
- \( 40 \times 4 = 160 \)
- \( 160 + 20 = 180 \)
- Answer: 180

3. 99 × 4
- \( 9 \times 4 = 36 \)
- \( 90 \times 4 = 360 \)
- \( 360 + 36 = 396 \)
- Answer: 396

4. 11 × 4
- \( 1 \times 4 = 4 \)
- \( 10 \times 4 = 40 \)
- \( 40 + 4 = 44 \)
- Answer: 44

5. 18 × 4
- \( 8 \times 4 = 32 \)
- \( 10 \times 4 = 40 \)
- \( 40 + 32 = 72 \)
- Answer: 72

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#### Row 4:
1. 75 × 4
- \( 5 \times 4 = 20 \)
- \( 70 \times 4 = 280 \)
- \( 280 + 20 = 300 \)
- Answer: 300

2. 41 × 4
- \( 1 \times 4 = 4 \)
- \( 40 \times 4 = 160 \)
- \( 160 + 4 = 164 \)
- Answer: 164

3. 69 × 4
- \( 9 \times 4 = 36 \)
- \( 60 \times 4 = 240 \)
- \( 240 + 36 = 276 \)
- Answer: 276

4. 18 × 4
- \( 8 \times 4 = 32 \)
- \( 10 \times 4 = 40 \)
- \( 40 + 32 = 72 \)
- Answer: 72

5. 79 × 4
- \( 9 \times 4 = 36 \)
- \( 70 \times 4 = 280 \)
- \( 280 + 36 = 316 \)
- Answer: 316

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#### Row 5:
1. 42 × 4
- \( 2 \times 4 = 8 \)
- \( 40 \times 4 = 160 \)
- \( 160 + 8 = 168 \)
- Answer: 168

2. 37 × 4
- \( 7 \times 4 = 28 \)
- \( 30 \times 4 = 120 \)
- \( 120 + 28 = 148 \)
- Answer: 148

3. 44 × 4
- \( 4 \times 4 = 16 \)
- \( 40 \times 4 = 160 \)
- \( 160 + 16 = 176 \)
- Answer: 176

4. 73 × 4
- \( 3 \times 4 = 12 \)
- \( 70 \times 4 = 280 \)
- \( 280 + 12 = 292 \)
- Answer: 292

5. 100 × 4
- \( 0 \times 4 = 0 \)
- \( 100 \times 4 = 400 \)
- \( 400 + 0 = 400 \)
- Answer: 400

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Final Answers:

\[
\begin{array}{ccccc}
68 & 304 & 272 & 164 & 92 \\
360 & 368 & 232 & 80 & 248 \\
368 & 180 & 396 & 44 & 72 \\
300 & 164 & 276 & 72 & 316 \\
168 & 148 & 176 & 292 & 400 \\
\end{array}
\]

\boxed{
\begin{array}{ccccc}
68 & 304 & 272 & 164 & 92 \\
360 & 368 & 232 & 80 & 248 \\
368 & 180 & 396 & 44 & 72 \\
300 & 164 & 276 & 72 & 316 \\
168 & 148 & 176 & 292 & 400 \\
\end{array}
}