题目内容
脱式计算.
| 10×(36+300÷12) | (
|
|
分析:(1)按照整数四则混合运算顺序计算.
(2)(3)题按分数四则混合运算顺序计算.
(2)(3)题按分数四则混合运算顺序计算.
解答:解:(1)10×(36+300÷12),
=10×(36+25),
=610;
(2)(
-
)÷
×
,
=
×
×
,
=
;
(3)
÷[
×(
+
)],
=
÷[
×
],
=
×
,
=
,
=1
;
=10×(36+25),
=610;
(2)(
| 2 |
| 3 |
| 1 |
| 2 |
| 5 |
| 3 |
| 5 |
| 6 |
=
| 1 |
| 6 |
| 3 |
| 5 |
| 5 |
| 6 |
=
| 1 |
| 12 |
(3)
| 8 |
| 9 |
| 4 |
| 3 |
| 2 |
| 5 |
| 1 |
| 10 |
=
| 8 |
| 9 |
| 4 |
| 3 |
| 1 |
| 2 |
=
| 8 |
| 9 |
| 3 |
| 2 |
=
| 4 |
| 3 |
=1
| 1 |
| 3 |
点评:此题主要考查分数、整数的四则混合运算的运算顺序,考查了学生的计算能力.
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