题目内容
用简便方法计算下面各题.
(1)0.45×9.67-4.67×0.45
(2)37.68-6.44-3.56.
(1)0.45×9.67-4.67×0.45
(2)37.68-6.44-3.56.
分析:(1)运用乘法分配律简算;
(2)运用减法的性质简算.
(2)运用减法的性质简算.
解答:解:(1)0.45×9.67-4.67×0.45
=0.45×(9.67-4.67)
=0.45×5
=2.25;
(2)37.68-6.44-3.56
=37.68-(6.44+3.56)
=37.68-10
=27.68.
=0.45×(9.67-4.67)
=0.45×5
=2.25;
(2)37.68-6.44-3.56
=37.68-(6.44+3.56)
=37.68-10
=27.68.
点评:完成本题要注意分析式中数据,运用合适的简便方法计算.
练习册系列答案
相关题目