2-digit by 1-digit Multiplication with Grid Support Including ... - Free Printable
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Step-by-step solution for: 2-digit by 1-digit Multiplication with Grid Support Including ...
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Show Answer Key & Explanations
Step-by-step solution for: 2-digit by 1-digit Multiplication with Grid Support Including ...
Let’s go through each multiplication problem one by one. These are all 2-digit numbers multiplied by 1-digit numbers. We’ll multiply step by step and write the answer in the grid as shown.
We’ll do each row left to right:
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Row 1:
1. 47 × 4
→ 7 × 4 = 28 → write 8, carry 2
→ 4 × 4 = 16 + 2 = 18 → write 18
→ Answer: 188
2. 28 × 8
→ 8 × 8 = 64 → write 4, carry 6
→ 2 × 8 = 16 + 6 = 22 → write 22
→ Answer: 224
3. 55 × 2
→ 5 × 2 = 10 → write 0, carry 1
→ 5 × 2 = 10 + 1 = 11 → write 11
→ Answer: 110
4. 37 × 3
→ 7 × 3 = 21 → write 1, carry 2
→ 3 × 3 = 9 + 2 = 11 → write 11
→ Answer: 111
5. 95 × 3
→ 5 × 3 = 15 → write 5, carry 1
→ 9 × 3 = 27 + 1 = 28 → write 28
→ Answer: 285
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Row 2:
6. 96 × 7
→ 6 × 7 = 42 → write 2, carry 4
→ 9 × 7 = 63 + 4 = 67 → write 67
→ Answer: 672
7. 15 × 7
→ 5 × 7 = 35 → write 5, carry 3
→ 1 × 7 = 7 + 3 = 10 → write 10
→ Answer: 105
8. 61 × 6
→ 1 × 6 = 6
→ 6 × 6 = 36 → write 36
→ Answer: 366
9. 49 × 2
→ 9 × 2 = 18 → write 8, carry 1
→ 4 × 2 = 8 + 1 = 9 → write 9
→ Answer: 98
10. 14 × 2
→ 4 × 2 = 8
→ 1 × 2 = 2 → write 2
→ Answer: 28
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Row 3:
11. 14 × 5
→ 4 × 5 = 20 → write 0, carry 2
→ 1 × 5 = 5 + 2 = 7 → write 7
→ Answer: 70
12. 89 × 3
→ 9 × 3 = 27 → write 7, carry 2
→ 8 × 3 = 24 + 2 = 26 → write 26
→ Answer: 267
13. 30 × 4
→ 0 × 4 = 0
→ 3 × 4 = 12 → write 12
→ Answer: 120
14. 78 × 3
→ 8 × 3 = 24 → write 4, carry 2
→ 7 × 3 = 21 + 2 = 23 → write 23
→ Answer: 234
15. 16 × 7
→ 6 × 7 = 42 → write 2, carry 4
→ 1 × 7 = 7 + 4 = 11 → write 11
→ Answer: 112
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Row 4:
16. 68 × 9
→ 8 × 9 = 72 → write 2, carry 7
→ 6 × 9 = 54 + 7 = 61 → write 61
→ Answer: 612
17. 45 × 3
→ 5 × 3 = 15 → write 5, carry 1
→ 4 × 3 = 12 + 1 = 13 → write 13
→ Answer: 135
18. 68 × 5
→ 8 × 5 = 40 → write 0, carry 4
→ 6 × 5 = 30 + 4 = 34 → write 34
→ Answer: 340
19. 99 × 9
→ 9 × 9 = 81 → write 1, carry 8
→ 9 × 9 = 81 + 8 = 89 → write 89
→ Answer: 891
20. 62 × 7
→ 2 × 7 = 14 → write 4, carry 1
→ 6 × 7 = 42 + 1 = 43 → write 43
→ Answer: 434
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Row 5:
21. 49 × 6
→ 9 × 6 = 54 → write 4, carry 5
→ 4 × 6 = 24 + 5 = 29 → write 29
→ Answer: 294
22. 56 × 8
→ 6 × 8 = 48 → write 8, carry 4
→ 5 × 8 = 40 + 4 = 44 → write 44
→ Answer: 448
23. 24 × 7
→ 4 × 7 = 28 → write 8, carry 2
→ 2 × 7 = 14 + 2 = 16 → write 16
→ Answer: 168
24. 99 × 8
→ 9 × 8 = 72 → write 2, carry 7
→ 9 × 8 = 72 + 7 = 79 → write 79
→ Answer: 792
25. 46 × 3
→ 6 × 3 = 18 → write 8, carry 1
→ 4 × 3 = 12 + 1 = 13 → write 13
→ Answer: 138
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Final Answer:
188, 224, 110, 111, 285, 672, 105, 366, 98, 28, 70, 267, 120, 234, 112, 612, 135, 340, 891, 434, 294, 448, 168, 792, 138
We’ll do each row left to right:
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Row 1:
1. 47 × 4
→ 7 × 4 = 28 → write 8, carry 2
→ 4 × 4 = 16 + 2 = 18 → write 18
→ Answer: 188
2. 28 × 8
→ 8 × 8 = 64 → write 4, carry 6
→ 2 × 8 = 16 + 6 = 22 → write 22
→ Answer: 224
3. 55 × 2
→ 5 × 2 = 10 → write 0, carry 1
→ 5 × 2 = 10 + 1 = 11 → write 11
→ Answer: 110
4. 37 × 3
→ 7 × 3 = 21 → write 1, carry 2
→ 3 × 3 = 9 + 2 = 11 → write 11
→ Answer: 111
5. 95 × 3
→ 5 × 3 = 15 → write 5, carry 1
→ 9 × 3 = 27 + 1 = 28 → write 28
→ Answer: 285
---
Row 2:
6. 96 × 7
→ 6 × 7 = 42 → write 2, carry 4
→ 9 × 7 = 63 + 4 = 67 → write 67
→ Answer: 672
7. 15 × 7
→ 5 × 7 = 35 → write 5, carry 3
→ 1 × 7 = 7 + 3 = 10 → write 10
→ Answer: 105
8. 61 × 6
→ 1 × 6 = 6
→ 6 × 6 = 36 → write 36
→ Answer: 366
9. 49 × 2
→ 9 × 2 = 18 → write 8, carry 1
→ 4 × 2 = 8 + 1 = 9 → write 9
→ Answer: 98
10. 14 × 2
→ 4 × 2 = 8
→ 1 × 2 = 2 → write 2
→ Answer: 28
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Row 3:
11. 14 × 5
→ 4 × 5 = 20 → write 0, carry 2
→ 1 × 5 = 5 + 2 = 7 → write 7
→ Answer: 70
12. 89 × 3
→ 9 × 3 = 27 → write 7, carry 2
→ 8 × 3 = 24 + 2 = 26 → write 26
→ Answer: 267
13. 30 × 4
→ 0 × 4 = 0
→ 3 × 4 = 12 → write 12
→ Answer: 120
14. 78 × 3
→ 8 × 3 = 24 → write 4, carry 2
→ 7 × 3 = 21 + 2 = 23 → write 23
→ Answer: 234
15. 16 × 7
→ 6 × 7 = 42 → write 2, carry 4
→ 1 × 7 = 7 + 4 = 11 → write 11
→ Answer: 112
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Row 4:
16. 68 × 9
→ 8 × 9 = 72 → write 2, carry 7
→ 6 × 9 = 54 + 7 = 61 → write 61
→ Answer: 612
17. 45 × 3
→ 5 × 3 = 15 → write 5, carry 1
→ 4 × 3 = 12 + 1 = 13 → write 13
→ Answer: 135
18. 68 × 5
→ 8 × 5 = 40 → write 0, carry 4
→ 6 × 5 = 30 + 4 = 34 → write 34
→ Answer: 340
19. 99 × 9
→ 9 × 9 = 81 → write 1, carry 8
→ 9 × 9 = 81 + 8 = 89 → write 89
→ Answer: 891
20. 62 × 7
→ 2 × 7 = 14 → write 4, carry 1
→ 6 × 7 = 42 + 1 = 43 → write 43
→ Answer: 434
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Row 5:
21. 49 × 6
→ 9 × 6 = 54 → write 4, carry 5
→ 4 × 6 = 24 + 5 = 29 → write 29
→ Answer: 294
22. 56 × 8
→ 6 × 8 = 48 → write 8, carry 4
→ 5 × 8 = 40 + 4 = 44 → write 44
→ Answer: 448
23. 24 × 7
→ 4 × 7 = 28 → write 8, carry 2
→ 2 × 7 = 14 + 2 = 16 → write 16
→ Answer: 168
24. 99 × 8
→ 9 × 8 = 72 → write 2, carry 7
→ 9 × 8 = 72 + 7 = 79 → write 79
→ Answer: 792
25. 46 × 3
→ 6 × 3 = 18 → write 8, carry 1
→ 4 × 3 = 12 + 1 = 13 → write 13
→ Answer: 138
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Final Answer:
188, 224, 110, 111, 285, 672, 105, 366, 98, 28, 70, 267, 120, 234, 112, 612, 135, 340, 891, 434, 294, 448, 168, 792, 138
Parent Tip: Review the logic above to help your child master the concept of two digit by one digit multiplication.