题目内容
递等式计算
|
|
|
|
分析:(1)、(2)、(4)、根据四则混合运算的运算顺序计算即可,先做乘除后做加减.
(3)我们运用乘法的就是法则进行计算即可.
(3)我们运用乘法的就是法则进行计算即可.
解答:解:(1)
÷8÷
,
=
×
×
,
=
×
=
;
(2)
×
×
,
=
×
,
=
;
(3)
-
×
,
=
×(1-
),
=
×
,
=
;
(4)
×
÷
,
=
×
,
=
.
| 7 |
| 10 |
| 14 |
| 5 |
=
| 7 |
| 10 |
| 1 |
| 8 |
| 5 |
| 14 |
=
| 7 |
| 80 |
| 5 |
| 14 |
=
| 1 |
| 32 |
(2)
| 3 |
| 5 |
| 5 |
| 27 |
| 3 |
| 8 |
=
| 1 |
| 9 |
| 3 |
| 8 |
=
| 1 |
| 24 |
(3)
| 6 |
| 5 |
| 5 |
| 6 |
| 6 |
| 5 |
=
| 6 |
| 5 |
| 5 |
| 6 |
=
| 6 |
| 5 |
| 1 |
| 6 |
=
| 1 |
| 5 |
(4)
| 1 |
| 4 |
| 8 |
| 9 |
| 10 |
| 9 |
=
| 2 |
| 9 |
| 9 |
| 10 |
=
| 1 |
| 5 |
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.
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