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25乘39怎样简算

25*39=25*(40-1)=25*40-25*1=1000-25=975

25*39+25 =25*(39+1) =25*40 =1000 你好,本题已解答,如果满意 请点右上角“采纳答案”.

25十39x25=(1十39)x25=40x25=1000

25*39=25*(40-1)=25*40-25*1=1000-25=975

3.9/25=39/10/25=39/250

25x39=25x(40-1)=25x40-25x1=1000-25=975

25x39x24=25x39x(4x6)=(25x4)x39x6=100x39x6=100x(40-1)x6=100x40x6-100x1x6=100x240-100x6=24000-600=23400

合并同类项,25+25乘以39=25乘以(1+39)=25乘以40=1000.

25*(40-1)1000-25975

=25x39+25 =25x(39+1) =25x40 =1000

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