0.46×7.5+0.46×2.5
来源:学生作业帮 编辑:搜搜考试网作业帮 分类:数学作业 时间:2024/06/10 16:40:58
0.46×7.5+0.46×2.5
3-7.14÷3.5×1.05
9.9×8.6+0.86
[20-(90.75÷6.6+2.25)]×11.6.
3-7.14÷3.5×1.05
9.9×8.6+0.86
[20-(90.75÷6.6+2.25)]×11.6.
①0.46×7.5+0.46×2.5,
=0.46×(7.5+2.5),
=0.46×10,
=4.6;
②3-7.14÷3.5×1.05,
=3-2.04×1.05,
=3-2.142,
=0.858;
③9.9×8.6+0.86,
=99×0.86+0.86,
=0.86×(99+1),
=0.86×100,
=86;
④[20-(90.75÷6.6+2.25)]×11.6,
=[20-(13.75+2.25)]×11.6,
=[20-16]×11.6,
=4×11.6,
=46.4.
=0.46×(7.5+2.5),
=0.46×10,
=4.6;
②3-7.14÷3.5×1.05,
=3-2.04×1.05,
=3-2.142,
=0.858;
③9.9×8.6+0.86,
=99×0.86+0.86,
=0.86×(99+1),
=0.86×100,
=86;
④[20-(90.75÷6.6+2.25)]×11.6,
=[20-(13.75+2.25)]×11.6,
=[20-16]×11.6,
=4×11.6,
=46.4.
7.5*23+31*2.5简便运算 0.79*0.46+7.9*0.24+11.4*0.079的简便运算
4.6×0.75+0.46×2.5的简便运算
0.46*2.5+6.4*0.25-0.25 简便,
谁能告诉我用简便方法计算下列各题:(1).7.5乘23+31乘2.5 (2).0.79乘0.46+7.9乘0.24+11
98.2×0.46的竖式很急,
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0.46天文单位相当于多少公里?
用简便方法解数学题1、395.6×192-39260×0.922、7.5×23+31×2.53、0.79×0.46+7.