试题:
脱式计算.(能简算的要简算)
(1)
1
4
÷
1
3
+
2
3
÷
1
2

(2)36×
5
8
+24÷
8
5

(3)(
3
4
-
2
3
)÷
5
12

答案:

我来补答
(1)
1
4
÷
1
3
+
2
3
÷
1
2

=
1
4
×3+
2
3
×2,
=
3
4
+
4
3

=2
1
12


(2)36×
5
8
+24÷
8
5

=36×
5
8
+24×
5
8

=(36+24)×
5
8

=60×
5
8

=37
1
2


(3)(
3
4
-
2
3
)÷
5
12

=
1
12
×
12
5

=
1
5
 
 
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