题目内容
计算下面各题. 6760÷13+17×25 |
4.82-5.2÷0.8×0.6 | |
. |
解:(1)6760÷13+17×25,
=520+425,
=945;
(2)4.82-5.2÷0.8×0.6,
=4.82-6.5×0.6,
=4.82-3.9,
=0.92;
(3),
=()×,
=×-×,
=,
=;
(4),
=÷,
=;
(5)(×),
=(),
=,
=1;
(6),
=×(÷),
=×,
=1.
分析:(1)按整数四则混合运算的顺序计算;
(2)按小数四则混合运算的顺序计算;
(3)利用乘法的分配律计算;
(4)(5)(6)按分数四则混合运算的顺序计算.
点评:此题考查了乘法的分配律和按整数、小数、分数的四则混合运算的顺序计算.
=520+425,
=945;
(2)4.82-5.2÷0.8×0.6,
=4.82-6.5×0.6,
=4.82-3.9,
=0.92;
(3),
=()×,
=×-×,
=,
=;
(4),
=÷,
=;
(5)(×),
=(),
=,
=1;
(6),
=×(÷),
=×,
=1.
分析:(1)按整数四则混合运算的顺序计算;
(2)按小数四则混合运算的顺序计算;
(3)利用乘法的分配律计算;
(4)(5)(6)按分数四则混合运算的顺序计算.
点评:此题考查了乘法的分配律和按整数、小数、分数的四则混合运算的顺序计算.
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