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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

Tuesday November 18 2025
04:59:29 PM
Tuesday November 18 2025
04:59:29 PM
Flip Answers
1)   409 * 391 =          
2)   301 * 299 =          
3)   199 * 201 =          
4)   391 * 409 =          
5)   202 * 198 =          
6)   203 * 197 =          
7)   393 * 407 =          
8)   198 * 202 =          
9)   104 * 96 =          
10)   210 * 190 =          
11)   162 * 75 - 75 * 62 =          
12)   45 * 137 - 37 * 45 =          
13)   35 * 92 + 65 * 92 =          
14)   64 * 90 + 36 * 90 =          
15)   143 * 74 - 43 * 74 =          
16)   255 * 58 - 58 * 55 =          
17)   67 * 71 + 129 * 67 =          
18)   71 * 43 + 129 * 43 =          
19)   40 * 23 + 60 * 23 =          
20)   61 * 38 + 38 * 139 =          

Score: ______________   

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