题目内容
(2012?武胜县)计算.
| 55×66÷(11×11) | 40.2-4÷80×2.4 | ||||||||||||||||
|
(
|
分析:按照整数、分数、小数的四则混合运算的顺序进行计算:有括号的,先算括号里面的,没有括号时,先算乘除法,再算加减法.
解答:解:55×66÷(11×11),
=3630÷121,
=30;
40.2-4÷80×2.4,
=40.2-0.12,
=40.08;
×【
÷(
×
)】,
=
×【
×
】,
=
×
,
=
;
(
+
)÷(
÷4-
),
=
×10,
=
.
=3630÷121,
=30;
40.2-4÷80×2.4,
=40.2-0.12,
=40.08;
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点评:此题考查整数、分数、小数的四则混合运算的计算题,有括号的,先算括号里面的,没有括号时,先算乘除法,再算加减法.
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