用简便方法计算..急急急
来源:百度知道 编辑:UC知道 时间:2024/06/22 15:45:13
874-696
1.25*25*3.2
就这两题,谢谢,把过程写出来哦。
1.25*25*3.2
就这两题,谢谢,把过程写出来哦。
874-696
=874-(700-4)
=874-700+4
=174+4
=178
1.25*25*3.2
=1.25*25*(8*0.4)
=(1.25*8)*(25*0.4)
=10*10
=100
874-696
=874-(700-4)
=874-700+4
=174+4
=178
1.25*25*3.2
=1.25*25*4*0.8
=1.25*100*0.8
=1.25*0.8*100
=1*100
=100
874-696
=(880-6)-(700-4)
=880-6-700+4
=178
1.25*25*3.2
=1.23×25×0.8×4
=(1.25×0.8)×(25×4)
=100
874-696=(874+4)-(696+4)=878-700=178
1.25×25×3.2=1.25×25×4×8=(1.25×8)×(25×4)=10×100=1000
874-696=874-700+4=174+4=178
1.25*25*3.2=1.25*25*4*0.8=1.25*0.8*25*4=1*100=100
874-696=880-690=170+8