题目内容
脱式计算
50.4×1.9-1.8 | 0.75×18÷0.15 | 2.07÷0.23÷0.45. |
分析:(1)先算乘法,再算减法;
(2)(3)按照从左往右的顺序计算即可.
(2)(3)按照从左往右的顺序计算即可.
解答:解:(1)50.4×1.9-1.8,
=95.76-1.8,
=93.96;
(2)0.75×18÷0.15,
=13.5÷0.15,
=90;
(3)2.07÷0.23÷0.45,
=9÷0.45,
=20.
=95.76-1.8,
=93.96;
(2)0.75×18÷0.15,
=13.5÷0.15,
=90;
(3)2.07÷0.23÷0.45,
=9÷0.45,
=20.
点评:考查了小数的四则混合运算.注意运算顺序和运算法则.
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脱式计算
50.4×1.9-1.8 | 0.75×18÷0.15 | 2.07÷0.23÷0.45. |