能简算的要简算
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+625% | ![]() |
. |
-22.05,=248-(25
+22.05),=248-47.5,
=200.5;
(2)12×(
),=12×
+12×
-12×
,=3+2-4,
=1;
(3)6.25×6+3×6
+625%,=6.25×(6+3+1),
=6.25×10,
=62.5;
(4)1
×(2
)
,=1
×1

,=1
×(1
+17
),=1
×18
,=24.5;
(5)(9
-3
-1
)×
,=(9
-5)×
,=4
,=1
.分析:(1)(5)运用减法性质解答,
(2)(3)(4)运用乘法分配律解答.
点评:本题考查知识点:选择正确简便算法进行计算.


+625%
.