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प्रश्न
Estimate and calculate:
| S.No. | Multiplication fact |
Actual value | Estimated value | Difference |
| 1. | 35 × 12 | 420 | 40 × 10 = 400 | 20 |
| 2. | 82 × 28 | |||
| 3. | 16 × 12 | |||
| 4. | 23 × 27 |
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उत्तर
| S.No. | Multiplication fact |
Actual value | Estimated value | Difference |
| 1. | 35 × 12 | 420 | 40 × 10 = 400 | 20 |
| 2. | 82 × 28 | 2296 | 80 × 30 = 2400 | 104 |
| 3. | 16 × 12 | 192 | 20 × 10 = 200 | 8 |
| 4. | 23 × 27 | 621 | 20 × 30 = 600 | 21 |
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