题目内容
(7
-6
)÷[2
+(4-2
)÷1.35].
| 5 |
| 18 |
| 11 |
| 15 |
| 14 |
| 15 |
| 14 |
| 15 |
分析:本题按照先算小括号里面的,再算中括号里面的,最后算括号外的运算顺序计算.
解答:解:(7
-6
)÷[2
+(4-2
)÷1.35],
=
÷[2
+
÷1.35],
=
÷[2
+
],
=
÷
,
=
.
| 5 |
| 18 |
| 11 |
| 15 |
| 14 |
| 15 |
| 14 |
| 15 |
=
| 49 |
| 90 |
| 14 |
| 15 |
| 16 |
| 15 |
=
| 49 |
| 90 |
| 14 |
| 15 |
| 64 |
| 81 |
=
| 49 |
| 90 |
| 1508 |
| 405 |
=
| 441 |
| 3016 |
点评:数字比较大,注意运算结果化成最简分数.
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