题目内容
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|
|
|
|
分析:(1)(2)按照从左到右顺序计算即可解答;
(3)按照先算除法,再算加法顺序即可解答;
(4)按照先算括号里面的,再算括号外面的顺序即可解答;
(5)依据等式的性质,方程两边同时乘
,再同时除以
求解.
(3)按照先算除法,再算加法顺序即可解答;
(4)按照先算括号里面的,再算括号外面的顺序即可解答;
(5)依据等式的性质,方程两边同时乘
| 3 |
| 4 |
| 5 |
| 8 |
解答:解:(1)
×
÷
,
=
÷
,
=
;
(2)
÷5×
,
=
×
,
=2
;
(3)
+
÷
,
=
+2,
=3
;
(4)
÷(
-
),
=
÷
,
=6;
(5)
Χ÷
=
,
x÷
×
=
×
,
x÷
=
÷
,
x=1.
| 9 |
| 46 |
| 11 |
| 12 |
| 22 |
| 23 |
=
| 33 |
| 184 |
| 22 |
| 23 |
=
| 3 |
| 8 |
(2)
| 40 |
| 7 |
| 5 |
| 2 |
=
| 8 |
| 7 |
| 5 |
| 2 |
=2
| 6 |
| 7 |
(3)
| 4 |
| 3 |
| 6 |
| 7 |
| 3 |
| 7 |
=
| 4 |
| 3 |
=3
| 1 |
| 3 |
(4)
| 8 |
| 5 |
| 3 |
| 5 |
| 1 |
| 3 |
=
| 8 |
| 5 |
| 4 |
| 15 |
=6;
(5)
| 5 |
| 8 |
| 3 |
| 4 |
| 5 |
| 6 |
| 5 |
| 8 |
| 3 |
| 4 |
| 3 |
| 4 |
| 5 |
| 6 |
| 3 |
| 4 |
| 5 |
| 8 |
| 5 |
| 8 |
| 5 |
| 8 |
| 5 |
| 8 |
x=1.
点评:(1)依据四则运算顺序正确进行计算,(2)以及等式的性质解方程,是本题考查知识点.
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