题目内容
计算:
1
×5
÷5
-
.
1
| 1 |
| 8 |
| 1 |
| 3 |
| 2 |
| 5 |
| 2 |
| 5 |
分析:先算乘法,再算除法,最后算减法.
解答:解:1
×5
÷5
-
,
=
×
÷5
-
,
=6×
-
,
=
-
,
=
.
| 1 |
| 8 |
| 1 |
| 3 |
| 2 |
| 5 |
| 2 |
| 5 |
=
| 9 |
| 8 |
| 16 |
| 3 |
| 2 |
| 5 |
| 2 |
| 5 |
=6×
| 5 |
| 27 |
| 2 |
| 5 |
=
| 10 |
| 9 |
| 2 |
| 5 |
=
| 32 |
| 45 |
点评:1、同一级运算,一般按从左往右依次进行计算;2、如果既有加减、又有乘除法,先算乘除法、再算加减.
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