题目内容
脱式计算
3÷[4
-
×(1
+1.7)]×14%.
3÷[4
| 1 |
| 3 |
| 13 |
| 29 |
| 1 |
| 5 |
分析:先算小括号里的加法,再算中括号里的乘法,再算中括号里的减法,最后算括号外的运算.
解答:解:3÷[4
-
×(1
+1.7)]×14%,
=3÷[4
-
×
)]×14%,
=3÷[4
-1.3)]×14%,
=3÷
×14%,
=3×
×
,
=
.
| 1 |
| 3 |
| 13 |
| 29 |
| 1 |
| 5 |
=3÷[4
| 1 |
| 3 |
| 13 |
| 29 |
| 29 |
| 10 |
=3÷[4
| 1 |
| 3 |
=3÷
| 91 |
| 30 |
=3×
| 30 |
| 91 |
| 14 |
| 100 |
=
| 9 |
| 65 |
点评:根据四则混合运算的顺序进行解答即可.
练习册系列答案
相关题目