题目内容
脱式计算.
360÷15-2.5×1.4
6÷
-
÷6
0.16+4÷(
-
)
÷[(
+
)÷
].
360÷15-2.5×1.4
6÷
| 3 |
| 5 |
| 3 |
| 5 |
0.16+4÷(
| 3 |
| 8 |
| 1 |
| 8 |
| 3 |
| 5 |
| 1 |
| 5 |
| 1 |
| 3 |
| 2 |
| 9 |
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:运用小数、分数的加减、乘除的计算法则及四则混合运算的顺序进行计算即可,
解答:
解:①360÷15-2.5×1.4
=24-3.5
=20.5
②6÷
-
÷6
=6×
-
×
=10-
=9
③0.16+4÷(
-
)
=0.16+4÷
=0.16+4×4
=16.16
④
÷[(
+
)÷
]
=
÷[
×
]
=
÷
=
×
=
=24-3.5
=20.5
②6÷
| 3 |
| 5 |
| 3 |
| 5 |
=6×
| 5 |
| 3 |
| 3 |
| 5 |
| 1 |
| 6 |
=10-
| 1 |
| 10 |
=9
| 9 |
| 10 |
③0.16+4÷(
| 3 |
| 8 |
| 1 |
| 8 |
=0.16+4÷
| 1 |
| 4 |
=0.16+4×4
=16.16
④
| 3 |
| 5 |
| 1 |
| 5 |
| 1 |
| 3 |
| 2 |
| 9 |
=
| 3 |
| 5 |
| 8 |
| 15 |
| 9 |
| 2 |
=
| 3 |
| 5 |
| 12 |
| 5 |
=
| 3 |
| 5 |
| 5 |
| 12 |
=
| 1 |
| 4 |
点评:考查了四则混合运算.注意运算顺序和运算法则,灵活计算.
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