题目内容
|
|
30-1.6÷
|
(
|
分析:(1)、(2)按照从左向右的顺序进行计算;
(3)先算除法,再算减法;
(4)先算加法,再算除法.
(3)先算除法,再算减法;
(4)先算加法,再算除法.
解答:解:(1)
÷4×
=
×
=
;
(2)
×
÷
=
÷
=
;
(3)30-1.6÷
=30-6
=24;
(4)(
+
)÷
=
÷
=
.
| 8 |
| 13 |
| 5 |
| 6 |
=
| 2 |
| 13 |
| 5 |
| 6 |
=
| 5 |
| 39 |
(2)
| 5 |
| 9 |
| 6 |
| 7 |
| 5 |
| 6 |
=
| 10 |
| 21 |
| 5 |
| 6 |
=
| 4 |
| 7 |
(3)30-1.6÷
| 4 |
| 15 |
=30-6
=24;
(4)(
| 1 |
| 6 |
| 1 |
| 2 |
| 6 |
| 7 |
=
| 2 |
| 3 |
| 6 |
| 7 |
=
| 7 |
| 9 |
点评:考查了分数四则混合运算.注意运算顺序和运算法则,然后再进一步计算.
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