如题所述
解法一:103×12
=(100+3)×12 =100×12+3×12 =1200+36 =1236 解法二:103*12 =103*(10+2) =103*10+103*2 =1030+206 =1236这两个解法其实思路是一样的.
=(100+3)×12 =100×12+3×12 =1200+36 =1236 解法二:103*12 =103*(10+2) =103*10+103*2 =1030+206 =1236这两个解法其实思路是一样的.
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