题目内容
脱式计算(能简算的要简算)
1110÷[56×(
-
)]
[1-(
-
)]×
(
-
)×6-7÷13
3÷
-
÷3.
1110÷[56×(
| 3 |
| 7 |
| 3 |
| 8 |
[1-(
| 1 |
| 2 |
| 1 |
| 4 |
| 2 |
| 3 |
(
| 1 |
| 3 |
| 1 |
| 13 |
3÷
| 3 |
| 7 |
| 3 |
| 7 |
考点:整数、分数、小数、百分数四则混合运算
专题:运算顺序及法则
分析:根据分数的四则混合运算方法运算即可.
解答:
解:①1110÷[56×(
-
)]
=1110÷[56×
-56×
]
=1110÷[24-21]
=1110÷3
=370
②[1-(
-
)]×
=[1-
]×
=
×
=
③(
-
)×6-7÷13
=
×6-
-
=2-(
+
)
=2-1
=1
④3÷
-
÷3
=3×
-
×
=7-
=6
| 3 |
| 7 |
| 3 |
| 8 |
=1110÷[56×
| 3 |
| 7 |
| 3 |
| 8 |
=1110÷[24-21]
=1110÷3
=370
②[1-(
| 1 |
| 2 |
| 1 |
| 4 |
| 2 |
| 3 |
=[1-
| 1 |
| 4 |
| 2 |
| 3 |
=
| 3 |
| 4 |
| 2 |
| 3 |
=
| 1 |
| 2 |
③(
| 1 |
| 3 |
| 1 |
| 13 |
=
| 1 |
| 3 |
| 6 |
| 13 |
| 7 |
| 13 |
=2-(
| 6 |
| 13 |
| 7 |
| 13 |
=2-1
=1
④3÷
| 3 |
| 7 |
| 3 |
| 7 |
=3×
| 7 |
| 3 |
| 3 |
| 7 |
| 1 |
| 3 |
=7-
| 1 |
| 7 |
=6
| 6 |
| 7 |
点评:此题考查分数的四则混合运算的计算题,能简算的要简算.
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