题目内容
(2012?同心县模拟)
脱式计算 275+216÷18×25 |
(
|
36÷(
|
分析:依据四则运算计算方法,先算第二级运算,再算第一级运算,如果只含有同一级运算,按照从左到右顺序计算,有括号先算括号里面的解答.
解答:解:275+216÷18×25,
=275+12×25,
=275+300,
=575;
(
+
)÷
×
,
=
÷
×
,
=
×
,
=
;
36÷(
-
)×3,
=36÷
×3,
=72×3,
=216.
=275+12×25,
=275+300,
=575;
(
1 |
7 |
1 |
4 |
11 |
14 |
1 |
6 |
=
11 |
28 |
11 |
14 |
1 |
6 |
=
1 |
2 |
1 |
6 |
=
1 |
12 |
36÷(
5 |
6 |
1 |
3 |
=36÷
1 |
2 |
=72×3,
=216.
点评:正确运用四则运算计算方法是解答本题的关键,解答时注意计算的准确性.
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