题目内容
55.6×(2-
)+56×1
+(1+
)×38.4.
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分析:这一道题主要运用乘法的分配律进行解答,2-
=1
,1+
=1
,所以提取1
再乘以(55.6+56+38.4)即可求得值.
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解答:解:55.6×(2-
)+56×1
+(1+
)×38.4,
=55.6×1
+56×1
+38.4×1
,
=1
×(55.6+56+38.4),
=
×150,
=180;
故答案为:180.
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| 5 |
| 1 |
| 5 |
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| 5 |
=55.6×1
| 1 |
| 5 |
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=1
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=
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=180;
故答案为:180.
点评:本题主要考查了乘法分配律的运用及小数分数的计算能力.
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