下面各题能简便计算的要简便计算.725÷[(34-25)×25]0.25×3.2×12.522×(211+316)×8935×811+335×91199989+9989+989110+140+188+1154.-数学
题文
下面各题能简便计算的要简便计算.
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答案
(1)
=
=
=2; 2)0.25×3.2×12.5, =0.25×(4×0.8)×12.5, =(0.25×4)×(0.8×12.5), =1×1, =1; (3)22×(
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题文
下面各题能简便计算的要简便计算.
|
答案
(1)
=
=
=2; 2)0.25×3.2×12.5, =0.25×(4×0.8)×12.5, =(0.25×4)×(0.8×12.5), =1×1, =1; (3)22×(
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