3.2×2.5×4
=3.2x10
=32
74×25-828÷23
=37x2x25-36
=37x50-36
=1850-36
=1814
57.5-4.25-15.7
=53.25-15.7
=37.55
谢谢,请采纳
-2.4+4.7-0.5+3.4-3.5=-2.3-0.5+3.4-3.5=-2.8+3.4-3.5=-0.6-3.5=-4.1不知道对错与否仅供参考
37.53.2×2.5×4=32
74×25-828÷23=1814
57.5-4.25-15.75=37.5
56×(1-4/7)÷8/11=33
恩怨毫匠w
10---1814---37.5---33