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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

Friday December 15 2017
06:59:45 AM
Friday December 15 2017
06:59:45 AM
Flip Answers
1)   397 * 403 =          
2)   203 * 197 =          
3)   393 * 407 =          
4)   310 * 290 =          
5)   404 * 396 =          
6)   192 * 208 =          
7)   407 * 393 =          
8)   94 * 106 =          
9)   105 * 95 =          
10)   193 * 207 =          
11)   49 * 147 + 49 * 53 =          
12)   247 * 67 - 47 * 67 =          
13)   236 * 55 - 55 * 36 =          
14)   36 * 264 - 64 * 36 =          
15)   165 * 34 - 65 * 34 =          
16)   136 * 93 - 36 * 93 =          
17)   43 * 259 - 43 * 59 =          
18)   251 * 77 - 51 * 77 =          
19)   156 * 48 - 48 * 56 =          
20)   66 * 38 + 62 * 66 =          

Score: ______________   

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