题目内容
(2007?门头沟区)脱式计算.
(1)24×105-9036÷18
(2)4.5+5.5×0.6×0.1
(3)
+
×
(4)
×[(
+
)÷
].
(1)24×105-9036÷18
(2)4.5+5.5×0.6×0.1
(3)
2 |
3 |
1 |
3 |
3 |
4 |
(4)
5 |
11 |
2 |
5 |
1 |
3 |
5 |
6 |
分析:按照四则混合运算的运算顺序和计算法则进行计算即可.
解答:解:①24×105-9036÷18,
=2520-502,
=2018;
②4.5+5.5×0.6×0.1,
=4.5+3.3×0.1,
=4.5+0.33,
=4.83;
③
+
×
,
=
+
,
=
;
④
×[(
+
)÷
],
=
×[
×
],
=
×
×
,
=
.
=2520-502,
=2018;
②4.5+5.5×0.6×0.1,
=4.5+3.3×0.1,
=4.5+0.33,
=4.83;
③
2 |
3 |
1 |
3 |
3 |
4 |
=
2 |
3 |
1 |
4 |
=
11 |
12 |
④
5 |
11 |
2 |
5 |
1 |
3 |
5 |
6 |
=
5 |
11 |
11 |
15 |
6 |
5 |
=
5 |
11 |
11 |
15 |
6 |
5 |
=
2 |
5 |
点评:此题考查了整数、分数、小数、百分数四则混合运算,计算时要细心.
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