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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

Monday May 21 2018
06:33:37 AM
Monday May 21 2018
06:33:37 AM
Flip Answers
1)   197 * 203 =          
2)   203 * 197 =          
3)   397 * 403 =          
4)   392 * 408 =          
5)   409 * 391 =          
6)   309 * 291 =          
7)   303 * 297 =          
8)   91 * 109 =          
9)   202 * 198 =          
10)   97 * 103 =          
11)   97 * 55 + 97 * 145 =          
12)   60 * 130 + 60 * 70 =          
13)   48 * 37 + 63 * 48 =          
14)   132 * 73 + 73 * 68 =          
15)   31 * 48 + 48 * 69 =          
16)   45 * 78 + 78 * 55 =          
17)   136 * 58 - 58 * 36 =          
18)   49 * 78 + 78 * 51 =          
19)   153 * 88 - 53 * 88 =          
20)   78 * 243 - 78 * 43 =          

Score: ______________   

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