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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

Saturday October 20 2018
06:36:35 AM
Saturday October 20 2018
06:36:35 AM
Flip Answers
1)   206 * 194 =          
2)   409 * 391 =          
3)   299 * 301 =          
4)   390 * 410 =          
5)   399 * 401 =          
6)   310 * 290 =          
7)   191 * 209 =          
8)   406 * 394 =          
9)   396 * 404 =          
10)   297 * 303 =          
11)   70 * 263 - 70 * 63 =          
12)   31 * 171 - 31 * 71 =          
13)   83 * 235 - 83 * 35 =          
14)   95 * 73 + 95 * 127 =          
15)   66 * 25 + 34 * 25 =          
16)   75 * 54 + 54 * 25 =          
17)   239 * 69 - 39 * 69 =          
18)   62 * 23 + 38 * 23 =          
19)   27 * 132 + 68 * 27 =          
20)   155 * 36 - 55 * 36 =          

Score: ______________   

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