题目内容
计算下列各题
4.05÷0.5+10.75;
6.3÷(2.25×0.8);
5.4÷(2.7×4).
4.05÷0.5+10.75;
6.3÷(2.25×0.8);
5.4÷(2.7×4).
分析:(1)先算除法,再算加法;
(2)先算乘法,再算除法;
(3)先算乘法,再算除法.
(2)先算乘法,再算除法;
(3)先算乘法,再算除法.
解答:解:(1)4.05÷0.5+10.75
=8.1+10.75
=18.85;
(2)6.3÷(2.25×0.8)
=6.3÷1.8
=3.5;
(3)5.4÷(2.7×4)
=5.4÷10.8
=0.5.
=8.1+10.75
=18.85;
(2)6.3÷(2.25×0.8)
=6.3÷1.8
=3.5;
(3)5.4÷(2.7×4)
=5.4÷10.8
=0.5.
点评:考查了小数四则混合运算,注意运算顺序,然后再进一步计算.
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