| 8-0.8= | 3.25×4= | 7.2÷0.4= |
24÷ = | × = | ÷ = |
1- = - = |
24
=32
×
=

=
1-
=
-
=
故答案为:7.2,13,18;32,
,
;
,
.分析:3.25×4可以运用乘法分配律简算,其它题目按照运算法则直接运算.
点评:本题考查的都是基本的计算题,运算时要细心,注意把结果化成最简分数.
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