题目内容
用你喜欢方式计算
÷16+
×
(
+
)÷
+
×
+
×
[2-(
+
)÷
].
| 4 |
| 7 |
| 2 |
| 7 |
| 1 |
| 16 |
(
| 4 |
| 5 |
| 1 |
| 4 |
| 7 |
| 3 |
| 7 |
| 10 |
| 7 |
| 8 |
| 4 |
| 7 |
| 3 |
| 8 |
| 4 |
| 9 |
[2-(
| 3 |
| 4 |
| 1 |
| 3 |
| 2 |
| 3 |
考点:分数的四则混合运算
专题:运算顺序及法则
分析:(1)运用乘法分配律解答,
(2)按照先算括号里面的加法,再算括号外面的除法,最后算括号外面的加法顺序计算解答,
(3)按照先同时算乘法,再算加法顺序计算解答,
(4)按照先算小括号里面的,再算除法,最后算减法顺序计算解答.
(2)按照先算括号里面的加法,再算括号外面的除法,最后算括号外面的加法顺序计算解答,
(3)按照先同时算乘法,再算加法顺序计算解答,
(4)按照先算小括号里面的,再算除法,最后算减法顺序计算解答.
解答:
解:(1)
÷16+
×
=(
+
)×
=
×
=
;
(2)(
+
)÷
+
=
÷
+
=
+
=1
;
(3)
×
+
×
=
+
=
;
(4)2-(
+
)÷
=2-
÷
=2-
=
.
| 4 |
| 7 |
| 2 |
| 7 |
| 1 |
| 16 |
=(
| 4 |
| 7 |
| 2 |
| 7 |
| 1 |
| 16 |
=
| 6 |
| 7 |
| 1 |
| 16 |
=
| 3 |
| 56 |
(2)(
| 4 |
| 5 |
| 1 |
| 4 |
| 7 |
| 3 |
| 7 |
| 10 |
=
| 21 |
| 20 |
| 7 |
| 3 |
| 7 |
| 10 |
=
| 9 |
| 20 |
| 7 |
| 10 |
=1
| 3 |
| 20 |
(3)
| 7 |
| 8 |
| 4 |
| 7 |
| 3 |
| 8 |
| 4 |
| 9 |
=
| 1 |
| 2 |
| 1 |
| 6 |
=
| 2 |
| 3 |
(4)2-(
| 3 |
| 4 |
| 1 |
| 3 |
| 2 |
| 3 |
=2-
| 13 |
| 12 |
| 2 |
| 3 |
=2-
| 39 |
| 24 |
=
| 3 |
| 8 |
点评:四则运算计算方法是解答本题的依据,关键是计算结果要准确.
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