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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

Tuesday October 17 2017
05:48:51 AM
Tuesday October 17 2017
05:48:51 AM
Flip Answers
1)   195 * 205 =          
2)   93 * 107 =          
3)   308 * 292 =          
4)   302 * 298 =          
5)   194 * 206 =          
6)   408 * 392 =          
7)   391 * 409 =          
8)   395 * 405 =          
9)   105 * 95 =          
10)   309 * 291 =          
11)   47 * 73 + 53 * 73 =          
12)   76 * 34 + 66 * 76 =          
13)   155 * 37 - 37 * 55 =          
14)   72 * 157 - 57 * 72 =          
15)   90 * 69 + 31 * 90 =          
16)   81 * 66 + 81 * 134 =          
17)   170 * 91 - 91 * 70 =          
18)   35 * 51 + 35 * 149 =          
19)   33 * 134 + 33 * 66 =          
20)   257 * 49 - 49 * 57 =          

Score: ______________   

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