题目内容
计算(能简算的要简算).
9.08×101
(
-
)÷(4÷
)
[1-(
+
)]÷
-(
+
×
)
9.08×101
(
| 1 |
| 2 |
| 3 |
| 8 |
| 8 |
| 15 |
[1-(
| 1 |
| 4 |
| 3 |
| 8 |
| 1 |
| 4 |
| 8 |
| 9 |
| 1 |
| 3 |
| 4 |
| 15 |
| 3 |
| 4 |
考点:小数四则混合运算,运算定律与简便运算,分数的四则混合运算
专题:运算顺序及法则,运算定律及简算
分析:①运用乘法的分配律进行计算即可.
②③④根据四则混合运算的运算顺序计算即可.
②③④根据四则混合运算的运算顺序计算即可.
解答:
解:①9.08×101
=9.08×(100+1)
=9.08×100+9.08
=908+9.08
=917.08
②(
-
)÷(4÷
)
=
÷(4×
)
=
×
=
③[1-(
+
)]÷
=[1-
]×4
=1
④
-(
+
×
)
=
-(
+
)
=
-
=
=9.08×(100+1)
=9.08×100+9.08
=908+9.08
=917.08
②(
| 1 |
| 2 |
| 3 |
| 8 |
| 8 |
| 15 |
=
| 1 |
| 8 |
| 15 |
| 8 |
=
| 1 |
| 8 |
| 2 |
| 15 |
=
| 1 |
| 60 |
③[1-(
| 1 |
| 4 |
| 3 |
| 8 |
| 1 |
| 4 |
=[1-
| 5 |
| 8 |
=1
| 1 |
| 2 |
④
| 8 |
| 9 |
| 1 |
| 3 |
| 4 |
| 15 |
| 3 |
| 4 |
=
| 8 |
| 9 |
| 5 |
| 15 |
| 3 |
| 15 |
=
| 8 |
| 9 |
| 8 |
| 15 |
=
| 16 |
| 45 |
点评:完成本题要注意分析式中数据,运用合适的简便方法计算.
练习册系列答案
相关题目