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7x25x7x4的简便计算

你好6*7*25*4=6*7*100=42*100=4200望采纳

=(6x7)x(25x4)=42x100=4200

78x25x4 =25x4x78 =100x78 =7800

125x7x25x4x8=7x(125x8)x(25x4)=7x1000x100=700000希望能帮到你!

125x25x4x4用简便计算=(125x4)x(25x4)=500x100=50000

解:7x199+7 =7x(199+1) =7x200 =1400

95x4x25=95x(4x25)=95x100=9500

36x7x25=4x9x7x25=4x25x9x7=6300

丨2.5x4.7x2.4=12.5*8*4.7*0.3=100*1.41=141

原式=7x8x25x4x125=7x(8x125)x(25x4)=7x1000x100=7000x100=700000

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