Multiplication Worksheets: (2-Digit by 1-Digit Math Drills) - DIY ... - Free Printable
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Step-by-step solution for: Multiplication Worksheets: (2-Digit by 1-Digit Math Drills) - DIY ...
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Show Answer Key & Explanations
Step-by-step solution for: Multiplication Worksheets: (2-Digit by 1-Digit Math Drills) - DIY ...
Of course! Let's solve all the multiplication problems on this worksheet. The task is to multiply each 2-digit number by 4.
We’ll go row by row and solve each problem step-by-step, showing the calculation for clarity.
---
Row 1:
1. 17 × 4
→ 10 × 4 = 40
→ 7 × 4 = 28
→ 40 + 28 = 68
2. 76 × 4
→ 70 × 4 = 280
→ 6 × 4 = 24
→ 280 + 24 = 304
3. 68 × 4
→ 60 × 4 = 240
→ 8 × 4 = 32
→ 240 + 32 = 272
4. 41 × 4
→ 40 × 4 = 160
→ 1 × 4 = 4
→ 160 + 4 = 164
5. 23 × 4
→ 20 × 4 = 80
→ 3 × 4 = 12
→ 80 + 12 = 92
---
Row 2:
6. 90 × 4
→ 9 × 4 = 36 → add a zero → 360
7. 92 × 4
→ 90 × 4 = 360
→ 2 × 4 = 8
→ 360 + 8 = 368
8. 58 × 4
→ 50 × 4 = 200
→ 8 × 4 = 32
→ 200 + 32 = 232
9. 20 × 4
→ 2 × 4 = 8 → add a zero → 80
10. 62 × 4
→ 60 × 4 = 240
→ 2 × 4 = 8
→ 240 + 8 = 248
---
Row 3:
11. 92 × 4 (same as #7) → 368
12. 45 × 4
→ 40 × 4 = 160
→ 5 × 4 = 20
→ 160 + 20 = 180
13. 99 × 4
→ 100 × 4 = 400 → subtract 1×4=4 → 400 - 4 = 396
*(or: 90×4=360, 9×4=36 → 360+36=396)*
14. 11 × 4
→ 10 × 4 = 40
→ 1 × 4 = 4
→ 40 + 4 = 44
15. 18 × 4
→ 10 × 4 = 40
→ 8 × 4 = 32
→ 40 + 32 = 72
---
Row 4:
16. 75 × 4
→ 70 × 4 = 280
→ 5 × 4 = 20
→ 280 + 20 = 300
17. 41 × 4 (same as #4) → 164
18. 69 × 4
→ 60 × 4 = 240
→ 9 × 4 = 36
→ 240 + 36 = 276
19. 18 × 4 (same as #15) → 72
20. 79 × 4
→ 70 × 4 = 280
→ 9 × 4 = 36
→ 280 + 36 = 316
---
Row 5:
21. 42 × 4
→ 40 × 4 = 160
→ 2 × 4 = 8
→ 160 + 8 = 168
22. 37 × 4
→ 30 × 4 = 120
→ 7 × 4 = 28
→ 120 + 28 = 148
23. 44 × 4
→ 40 × 4 = 160
→ 4 × 4 = 16
→ 160 + 16 = 176
24. 73 × 4
→ 70 × 4 = 280
→ 3 × 4 = 12
→ 280 + 12 = 292
25. 100 × 4
→ 1 × 4 = 4 → add two zeros → 400
---
✔ Final Answer Key (All Problems Solved):
| Problem | Answer |
|--------------|--------|
| 17 × 4 | 68 |
| 76 × 4 | 304 |
| 68 × 4 | 272 |
| 41 × 4 | 164 |
| 23 × 4 | 92 |
| 90 × 4 | 360 |
| 92 × 4 | 368 |
| 58 × 4 | 232 |
| 20 × 4 | 80 |
| 62 × 4 | 248 |
| 92 × 4 | 368 |
| 45 × 4 | 180 |
| 99 × 4 | 396 |
| 11 × 4 | 44 |
| 18 × 4 | 72 |
| 75 × 4 | 300 |
| 41 × 4 | 164 |
| 69 × 4 | 276 |
| 18 × 4 | 72 |
| 79 × 4 | 316 |
| 42 × 4 | 168 |
| 37 × 4 | 148 |
| 44 × 4 | 176 |
| 73 × 4 | 292 |
| 100 × 4 | 400 |
---
Explanation Summary:
To multiply a 2-digit number by 4:
- Break the number into tens and ones (e.g., 68 = 60 + 8).
- Multiply each part by 4.
- Add the results together.
You can also use the standard algorithm:
- Multiply the ones digit by 4, write down the ones digit of the result, carry over if needed.
- Multiply the tens digit by 4, add any carry-over.
This worksheet helps reinforce multiplication facts and place value understanding — great practice for building fluency!
Let me know if you’d like a printable answer sheet or want to check your work against these answers! 🌈
We’ll go row by row and solve each problem step-by-step, showing the calculation for clarity.
---
Row 1:
1. 17 × 4
→ 10 × 4 = 40
→ 7 × 4 = 28
→ 40 + 28 = 68
2. 76 × 4
→ 70 × 4 = 280
→ 6 × 4 = 24
→ 280 + 24 = 304
3. 68 × 4
→ 60 × 4 = 240
→ 8 × 4 = 32
→ 240 + 32 = 272
4. 41 × 4
→ 40 × 4 = 160
→ 1 × 4 = 4
→ 160 + 4 = 164
5. 23 × 4
→ 20 × 4 = 80
→ 3 × 4 = 12
→ 80 + 12 = 92
---
Row 2:
6. 90 × 4
→ 9 × 4 = 36 → add a zero → 360
7. 92 × 4
→ 90 × 4 = 360
→ 2 × 4 = 8
→ 360 + 8 = 368
8. 58 × 4
→ 50 × 4 = 200
→ 8 × 4 = 32
→ 200 + 32 = 232
9. 20 × 4
→ 2 × 4 = 8 → add a zero → 80
10. 62 × 4
→ 60 × 4 = 240
→ 2 × 4 = 8
→ 240 + 8 = 248
---
Row 3:
11. 92 × 4 (same as #7) → 368
12. 45 × 4
→ 40 × 4 = 160
→ 5 × 4 = 20
→ 160 + 20 = 180
13. 99 × 4
→ 100 × 4 = 400 → subtract 1×4=4 → 400 - 4 = 396
*(or: 90×4=360, 9×4=36 → 360+36=396)*
14. 11 × 4
→ 10 × 4 = 40
→ 1 × 4 = 4
→ 40 + 4 = 44
15. 18 × 4
→ 10 × 4 = 40
→ 8 × 4 = 32
→ 40 + 32 = 72
---
Row 4:
16. 75 × 4
→ 70 × 4 = 280
→ 5 × 4 = 20
→ 280 + 20 = 300
17. 41 × 4 (same as #4) → 164
18. 69 × 4
→ 60 × 4 = 240
→ 9 × 4 = 36
→ 240 + 36 = 276
19. 18 × 4 (same as #15) → 72
20. 79 × 4
→ 70 × 4 = 280
→ 9 × 4 = 36
→ 280 + 36 = 316
---
Row 5:
21. 42 × 4
→ 40 × 4 = 160
→ 2 × 4 = 8
→ 160 + 8 = 168
22. 37 × 4
→ 30 × 4 = 120
→ 7 × 4 = 28
→ 120 + 28 = 148
23. 44 × 4
→ 40 × 4 = 160
→ 4 × 4 = 16
→ 160 + 16 = 176
24. 73 × 4
→ 70 × 4 = 280
→ 3 × 4 = 12
→ 280 + 12 = 292
25. 100 × 4
→ 1 × 4 = 4 → add two zeros → 400
---
✔ Final Answer Key (All Problems Solved):
| Problem | Answer |
|--------------|--------|
| 17 × 4 | 68 |
| 76 × 4 | 304 |
| 68 × 4 | 272 |
| 41 × 4 | 164 |
| 23 × 4 | 92 |
| 90 × 4 | 360 |
| 92 × 4 | 368 |
| 58 × 4 | 232 |
| 20 × 4 | 80 |
| 62 × 4 | 248 |
| 92 × 4 | 368 |
| 45 × 4 | 180 |
| 99 × 4 | 396 |
| 11 × 4 | 44 |
| 18 × 4 | 72 |
| 75 × 4 | 300 |
| 41 × 4 | 164 |
| 69 × 4 | 276 |
| 18 × 4 | 72 |
| 79 × 4 | 316 |
| 42 × 4 | 168 |
| 37 × 4 | 148 |
| 44 × 4 | 176 |
| 73 × 4 | 292 |
| 100 × 4 | 400 |
---
Explanation Summary:
To multiply a 2-digit number by 4:
- Break the number into tens and ones (e.g., 68 = 60 + 8).
- Multiply each part by 4.
- Add the results together.
You can also use the standard algorithm:
- Multiply the ones digit by 4, write down the ones digit of the result, carry over if needed.
- Multiply the tens digit by 4, add any carry-over.
This worksheet helps reinforce multiplication facts and place value understanding — great practice for building fluency!
Let me know if you’d like a printable answer sheet or want to check your work against these answers! 🌈
Parent Tip: Review the logic above to help your child master the concept of math worksheet for grade 2 multiplication.
