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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Wednesday March 11 2026
05:54:06 AM | Wednesday March 11 2026
05:54:06 AMFlip Answers |
| 1) | 305 * 295 = | | 1) 300 * 300 - 5 * 5 = 89975 |
| 2) | 93 * 107 = | | 2) 100 * 100 - 7 * 7 = 9951 |
| 3) | 193 * 207 = | | 3) 200 * 200 - 7 * 7 = 39951 |
| 4) | 393 * 407 = | | 4) 400 * 400 - 7 * 7 = 159951 |
| 5) | 94 * 106 = | | 5) 100 * 100 - 6 * 6 = 9964 |
| 6) | 102 * 98 = | | 6) 100 * 100 - 2 * 2 = 9996 |
| 7) | 93 * 107 = | | 7) 100 * 100 - 7 * 7 = 9951 |
| 8) | 303 * 297 = | | 8) 300 * 300 - 3 * 3 = 89991 |
| 9) | 107 * 93 = | | 9) 100 * 100 - 7 * 7 = 9951 |
| 10) | 95 * 105 = | | 10) 100 * 100 - 5 * 5 = 9975 |
| 11) | 174 * 26 - 26 * 74 = | | 11) ( 174 - 74) * 26 = 2600 |
| 12) | 242 * 51 - 42 * 51 = | | 12) ( 242 - 42) * 51 = 10200 |
| 13) | 248 * 88 - 48 * 88 = | | 13) ( 248 - 48) * 88 = 17600 |
| 14) | 260 * 22 - 60 * 22 = | | 14) ( 260 - 60) * 22 = 4400 |
| 15) | 69 * 150 - 50 * 69 = | | 15) ( 150 - 50) * 69 = 6900 |
| 16) | 166 * 33 - 66 * 33 = | | 16) ( 166 - 66) * 33 = 3300 |
| 17) | 247 * 35 - 47 * 35 = | | 17) ( 247 - 47) * 35 = 7000 |
| 18) | 147 * 35 + 53 * 35 = | | 18) ( 147 + 53) * 35 = 7000 |
| 19) | 33 * 45 + 155 * 33 = | | 19) ( 155 + 45) * 33 = 6600 |
| 20) | 33 * 168 - 33 * 68 = | | 20) ( 168 - 68) * 33 = 3300 |
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Score: ______________ | |
