计算。24.7-11-91-0.125÷84×0.25+×16(2.5+3.6)×2+3.9×20.875×+0.125÷2-30%×0.2÷50%-五年级数学

题文

计算。
24.7-11-9 1-0.125÷
84×0.25+×16 (2.5+3.6)×2+3.9×2
0.875×+0.125÷2 -30%×0.2÷50%
题型:计算题  难度:中档

答案

解:①24.7-11-9
=24.7-(11+9),
=24.7-20
=4
②1-0.125÷
=1-0.125÷0.125,
=1-1,
=0;
③84×0.25+×16,
=84×0.25+0.25×16,
=0.25×(84+16),
=0.25×100,
=25;
④(2.5+3.6)×2+3.9×2
=2×(2.5+3.6+3.9),
=×10,
=22.5;
⑤0.875×+0.125÷2,
=0.875×+0.125×
=×(0.875+0.125),
=×1,
=
-30%×0.2÷50%,
=0.5-0.3×0.2÷0.5,
=0.5-0.12,
=0.38

据专家权威分析,试题“计算。24.7-11-91-0.125÷84×0.25+×16(2.5+3.6)×2+3.9×20...”主要考查你对  整数,小数,分数,百分数和比例的混合计算  等考点的理解。关于这些考点的“档案”如下:

整数,小数,分数,百分数和比例的混合计算

考点名称:整数,小数,分数,百分数和比例的混合计算

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