题目内容
计算下面各题.(能简算的要用简便方法计算.)
×
×
÷
÷
×
÷
×4
×(
+7)
×
+
×
.
5 |
12 |
7 |
25 |
3 |
14 |
7 |
9 |
1 |
2 |
35 |
36 |
3 |
5 |
8 |
9 |
5 |
8 |
5 |
12 |
1 |
14 |
7 |
8 |
5 |
6 |
1 |
4 |
5 |
6 |
3 |
4 |
分析:按照分数乘除法的计算方法进行计算即可.
解答:解:
×
×
=
;
÷
÷
,
=
×2×
,
=
;
×
÷
,
=
×
,
=
;
×4=
;
×(
+7),
=
×
+7×
,
=
+
,
=
;
×
+
×
,
=
×(
+
),
=
.
5 |
12 |
7 |
25 |
3 |
14 |
1 |
40 |
7 |
9 |
1 |
2 |
35 |
36 |
=
7 |
9 |
36 |
35 |
=
8 |
5 |
3 |
5 |
8 |
9 |
5 |
8 |
=
8 |
15 |
8 |
5 |
=
64 |
75 |
5 |
12 |
5 |
3 |
1 |
14 |
7 |
8 |
=
1 |
14 |
7 |
8 |
1 |
14 |
=
1 |
16 |
1 |
2 |
=
9 |
16 |
5 |
6 |
1 |
4 |
5 |
6 |
3 |
4 |
=
5 |
6 |
1 |
4 |
3 |
4 |
=
5 |
6 |
点评:此题考查在混合运算中有括号时,要先算括号里面的,再算括号外面的;只有乘除法时,一般从左往右按顺序计算;
能简算的要用简便方法计算.
能简算的要用简便方法计算.
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