题目内容
计算:(
+
×1
)÷[(4-2
)×3].
| 1 |
| 3 |
| 5 |
| 7 |
| 2 |
| 5 |
| 2 |
| 3 |
分析:本题根据四则混合运算的运算顺序计算即可:先算乘除,再算加减,有括号的要先算括号里面的.
解答:解:(
+
×1
)÷[(4-2
)×3].
=(
+
×
)÷[
×3].
=(
+1)÷4,
=
×
,
=
.
| 1 |
| 3 |
| 5 |
| 7 |
| 2 |
| 5 |
| 2 |
| 3 |
=(
| 1 |
| 3 |
| 5 |
| 7 |
| 7 |
| 5 |
| 4 |
| 3 |
=(
| 1 |
| 3 |
=
| 4 |
| 3 |
| 1 |
| 4 |
=
| 1 |
| 3 |
点评:当算式中同时含有中括号与小括号时,要先算中括号里面的,再算小括号里面的.
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