计算下面各题.807×99+80725×13×15×310(329+113)×13×29[1-(12-14)]×252.3×1.5+4.5÷0.751.25×(3.24-2.36)÷11.
计算下面各题.
807×99+80725×××
(+)×13×29
[1-(-)]×
2.3×1.5+4.5÷0.75
1.25×(3.24-2.36)÷11.
答案和解析
(1)807×99+80725×
××
=807×(100-1)+1614.5
=807×100-807×1+1614.5
=80700-807+1614.5
=81507.5
(2)(+)×13×29
=×13×29+×13×29
=39+29
=68
(3)[1-(-)]×
=[1-]×
=×
=
(4)2.3×1.5+4.5÷0.75
=3.45+6
=9.45
(5)1.25×(3.24-2.36)÷11
=1.25×0.88÷11
=1.1÷11
=0.1
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