Multiplying (1 to 10) by 6 (100 Questions) (A) - Free Printable

Let's solve each of the two-digit by one-digit multiplication problems in your worksheet. I'll go through them step-by-step and provide the answers.

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Row 1:

1. $ 98 \times 8 = (90 + 8) \times 8 = 90 \times 8 + 8 \times 8 = 720 + 64 = 784 $
2. $ 89 \times 5 = (80 + 9) \times 5 = 80 \times 5 + 9 \times 5 = 400 + 45 = 445 $
3. $ 25 \times 7 = (20 + 5) \times 7 = 20 \times 7 + 5 \times 7 = 140 + 35 = 175 $
4. $ 98 \times 3 = (90 + 8) \times 3 = 90 \times 3 + 8 \times 3 = 270 + 24 = 294 $
5. $ 21 \times 7 = (20 + 1) \times 7 = 20 \times 7 + 1 \times 7 = 140 + 7 = 147 $
6. $ 49 \times 1 = 49 $
7. $ 29 \times 2 = (20 + 9) \times 2 = 20 \times 2 + 9 \times 2 = 40 + 18 = 58 $
8. $ 57 \times 5 = (50 + 7) \times 5 = 50 \times 5 + 7 \times 5 = 250 + 35 = 285 $

✔ Row 1 Answers:
784, 445, 175, 294, 147, 49, 58, 285

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Row 2:

1. $ 95 \times 2 = (90 + 5) \times 2 = 90 \times 2 + 5 \times 2 = 180 + 10 = 190 $
2. $ 79 \times 4 = (70 + 9) \times 4 = 70 \times 4 + 9 \times 4 = 280 + 36 = 316 $
3. $ 47 \times 3 = (40 + 7) \times 3 = 40 \times 3 + 7 \times 3 = 120 + 21 = 141 $
4. $ 70 \times 5 = 350 $
5. $ 14 \times 8 = (10 + 4) \times 8 = 10 \times 8 + 4 \times 8 = 80 + 32 = 112 $
6. $ 79 \times 1 = 79 $
7. $ 86 \times 5 = (80 + 6) \times 5 = 80 \times 5 + 6 \times 5 = 400 + 30 = 430 $
8. $ 25 \times 8 = (20 + 5) \times 8 = 20 \times 8 + 5 \times 8 = 160 + 40 = 200 $

✔ Row 2 Answers:
190, 316, 141, 350, 112, 79, 430, 200

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Row 3:

1. $ 91 \times 6 = (90 + 1) \times 6 = 90 \times 6 + 1 \times 6 = 540 + 6 = 546 $
2. $ 36 \times 2 = 72 $
3. $ 48 \times 5 = (40 + 8) \times 5 = 40 \times 5 + 8 \times 5 = 200 + 40 = 240 $
4. $ 67 \times 5 = (60 + 7) \times 5 = 60 \times 5 + 7 \times 5 = 300 + 35 = 335 $
5. $ 11 \times 4 = 44 $
6. $ 85 \times 9 = (80 + 5) \times 9 = 80 \times 9 + 5 \times 9 = 720 + 45 = 765 $
7. $ 19 \times 1 = 19 $
8. $ 82 \times 1 = 82 $

✔ Row 3 Answers:
546, 72, 240, 335, 44, 765, 19, 82

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Row 4:

1. $ 57 \times 6 = (50 + 7) \times 6 = 50 \times 6 + 7 \times 6 = 300 + 42 = 342 $
2. $ 27 \times 5 = (20 + 7) \times 5 = 20 \times 5 + 7 \times 5 = 100 + 35 = 135 $
3. $ 64 \times 7 = (60 + 4) \times 7 = 60 \times 7 + 4 \times 7 = 420 + 28 = 448 $
4. $ 70 \times 6 = 420 $
5. $ 60 \times 1 = 60 $
6. $ 38 \times 8 = (30 + 8) \times 8 = 30 \times 8 + 8 \times 8 = 240 + 64 = 304 $
7. $ 26 \times 1 = 26 $
8. $ 39 \times 6 = (30 + 9) \times 6 = 30 \times 6 + 9 \times 6 = 180 + 54 = 234 $

✔ Row 4 Answers:
342, 135, 448, 420, 60, 304, 26, 234

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Row 5:

1. $ 11 \times 5 = 55 $
2. $ 73 \times 5 = (70 + 3) \times 5 = 70 \times 5 + 3 \times 5 = 350 + 15 = 365 $
3. $ 95 \times 4 = (90 + 5) \times 4 = 90 \times 4 + 5 \times 4 = 360 + 20 = 380 $
4. $ 81 \times 2 = 162 $
5. $ 57 \times 9 = (50 + 7) \times 9 = 50 \times 9 + 7 \times 9 = 450 + 63 = 513 $
6. $ 98 \times 2 = (90 + 8) \times 2 = 90 \times 2 + 8 \times 2 = 180 + 16 = 196 $
7. $ 93 \times 2 = 186 $
8. $ 82 \times 3 = (80 + 2) \times 3 = 80 \times 3 + 2 \times 3 = 240 + 6 = 246 $

✔ Row 5 Answers:
55, 365, 380, 162, 513, 196, 186, 246

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Row 6:

1. $ 27 \times 2 = 54 $
2. $ 20 \times 3 = 60 $
3. $ 26 \times 2 = 52 $
4. $ 89 \times 2 = (80 + 9) \times 2 = 80 \times 2 + 9 \times 2 = 160 + 18 = 178 $
5. $ 24 \times 5 = (20 + 4) \times 5 = 20 \times 5 + 4 \times 5 = 100 + 20 = 120 $
6. $ 40 \times 5 = 200 $
7. $ 91 \times 3 = (90 + 1) \times 3 = 90 \times 3 + 1 \times 3 = 270 + 3 = 273 $
8. $ 14 \times 2 = 28 $

✔ Row 6 Answers:
54, 60, 52, 178, 120, 200, 273, 28

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Row 7:

1. $ 66 \times 5 = (60 + 6) \times 5 = 60 \times 5 + 6 \times 5 = 300 + 30 = 330 $
2. $ 52 \times 2 = 104 $
3. $ 87 \times 3 = (80 + 7) \times 3 = 80 \times 3 + 7 \times 3 = 240 + 21 = 261 $
4. $ 39 \times 1 = 39 $
5. $ 33 \times 8 = (30 + 3) \times 8 = 30 \times 8 + 3 \times 8 = 240 + 24 = 264 $
6. $ 38 \times 9 = (30 + 8) \times 9 = 30 \times 9 + 8 \times 9 = 270 + 72 = 342 $
7. $ 58 \times 6 = (50 + 8) \times 6 = 50 \times 6 + 8 \times 6 = 300 + 48 = 348 $
8. $ 36 \times 7 = (30 + 6) \times 7 = 30 \times 7 + 6 \times 7 = 210 + 42 = 252 $

✔ Row 7 Answers:
330, 104, 261, 39, 264, 342, 348, 252

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Row 8:

1. $ 81 \times 9 = (80 + 1) \times 9 = 80 \times 9 + 1 \times 9 = 720 + 9 = 729 $
2. $ 24 \times 9 = (20 + 4) \times 9 = 20 \times 9 + 4 \times 9 = 180 + 36 = 216 $
3. $ 54 \times 4 = (50 + 4) \times 4 = 50 \times 4 + 4 \times 4 = 200 + 16 = 216 $
4. $ 63 \times 9 = (60 + 3) \times 9 = 60 \times 9 + 3 \times 9 = 540 + 27 = 567 $
5. $ 35 \times 8 = (30 + 5) \times 8 = 30 \times 8 + 5 \times 8 = 240 + 40 = 280 $
6. $ 83 \times 1 = 83 $
7. $ 34 \times 1 = 34 $
8. $ 78 \times 1 = 78 $

✔ Row 8 Answers:
729, 216, 216, 567, 280, 83, 34, 78

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✔ Final Answer Key (All Rows):

```
Row 1: 784, 445, 175, 294, 147, 49, 58, 285
Row 2: 190, 316, 141, 350, 112, 79, 430, 200
Row 3: 546, 72, 240, 335, 44, 765, 19, 82
Row 4: 342, 135, 448, 420, 60, 304, 26, 234
Row 5: 55, 365, 380, 162, 513, 196, 186, 246
Row 6: 54, 60, 52, 178, 120, 200, 273, 28
Row 7: 330, 104, 261, 39, 264, 342, 348, 252
Row 8: 729, 216, 216, 567, 280, 83, 34, 78
```

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🔍 Explanation:

Each problem is a two-digit number multiplied by a one-digit number. The strategy used here is:
- Break the two-digit number into tens and ones.
- Multiply each part by the one-digit number.
- Add the results.

For example:
$ 47 \times 3 = (40 \times 3) + (7 \times 3) = 120 + 21 = 141 $

This method helps avoid errors and reinforces understanding of place value and distributive property.

Let me know if you'd like this formatted as a printable answer sheet!