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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

Wednesday July 18 2018
08:22:24 PM
Wednesday July 18 2018
08:22:24 PM
Flip Answers
1)   409 * 391 =          
2)   191 * 209 =          
3)   403 * 397 =          
4)   103 * 97 =          
5)   410 * 390 =          
6)   197 * 203 =          
7)   94 * 106 =          
8)   104 * 96 =          
9)   199 * 201 =          
10)   305 * 295 =          
11)   26 * 153 - 26 * 53 =          
12)   268 * 83 - 83 * 68 =          
13)   49 * 41 + 51 * 41 =          
14)   48 * 72 + 72 * 152 =          
15)   162 * 55 - 62 * 55 =          
16)   67 * 237 - 67 * 37 =          
17)   95 * 154 + 46 * 95 =          
18)   53 * 90 + 90 * 47 =          
19)   48 * 71 + 52 * 71 =          
20)   33 * 157 - 57 * 33 =          

Score: ______________   

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