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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

Sunday June 16 2019
04:52:20 PM
Sunday June 16 2019
04:52:20 PM
Flip Answers
1)   391 * 409 =          
2)   308 * 292 =          
3)   408 * 392 =          
4)   299 * 301 =          
5)   204 * 196 =          
6)   404 * 396 =          
7)   98 * 102 =          
8)   198 * 202 =          
9)   93 * 107 =          
10)   410 * 390 =          
11)   45 * 149 - 45 * 49 =          
12)   258 * 55 - 55 * 58 =          
13)   68 * 57 + 32 * 57 =          
14)   40 * 47 + 53 * 40 =          
15)   71 * 83 + 129 * 83 =          
16)   27 * 59 + 59 * 73 =          
17)   64 * 37 + 37 * 136 =          
18)   86 * 35 + 86 * 65 =          
19)   72 * 147 + 72 * 53 =          
20)   50 * 40 + 50 * 160 =          

Score: ______________   

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