Math Main Page => Exercises - Math III
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Goal: to practice how to make use of distributive property on special numbers, like (A + B) * (A - B) = A*A - B*B, A*C +B*C = (A + B ) *C, A*C - B*C = (A-B) * C
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Saturday August 01 2026
08:30:17 AM | Saturday August 01 2026
08:30:17 AMFlip Answers |
| 1) | 199 * 201 = | | 1) 200 * 200 - 1 * 1 = 39999 |
| 2) | 194 * 206 = | | 2) 200 * 200 - 6 * 6 = 39964 |
| 3) | 207 * 193 = | | 3) 200 * 200 - 7 * 7 = 39951 |
| 4) | 96 * 104 = | | 4) 100 * 100 - 4 * 4 = 9984 |
| 5) | 394 * 406 = | | 5) 400 * 400 - 6 * 6 = 159964 |
| 6) | 304 * 296 = | | 6) 300 * 300 - 4 * 4 = 89984 |
| 7) | 104 * 96 = | | 7) 100 * 100 - 4 * 4 = 9984 |
| 8) | 306 * 294 = | | 8) 300 * 300 - 6 * 6 = 89964 |
| 9) | 96 * 104 = | | 9) 100 * 100 - 4 * 4 = 9984 |
| 10) | 294 * 306 = | | 10) 300 * 300 - 6 * 6 = 89964 |
| 11) | 62 * 175 - 62 * 75 = | | 11) ( 175 - 75) * 62 = 6200 |
| 12) | 68 * 75 + 75 * 132 = | | 12) ( 132 + 68) * 75 = 15000 |
| 13) | 95 * 72 + 28 * 95 = | | 13) ( 28 + 72) * 95 = 9500 |
| 14) | 150 * 24 - 50 * 24 = | | 14) ( 150 - 50) * 24 = 2400 |
| 15) | 165 * 96 + 35 * 96 = | | 15) ( 165 + 35) * 96 = 19200 |
| 16) | 235 * 77 - 35 * 77 = | | 16) ( 235 - 35) * 77 = 15400 |
| 17) | 29 * 59 + 41 * 29 = | | 17) ( 41 + 59) * 29 = 2900 |
| 18) | 24 * 274 - 24 * 74 = | | 18) ( 274 - 74) * 24 = 4800 |
| 19) | 72 * 264 - 64 * 72 = | | 19) ( 264 - 64) * 72 = 14400 |
| 20) | 69 * 32 + 32 * 131 = | | 20) ( 131 + 69) * 32 = 6400 |
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Score: ______________ | |
