试题:
直接写数对又快.
7
12
×
8
9
=
3
4
-0.5=
5.2+1.91=
12
25
×25%=
1-0.33=40÷9=

答案:

我来补答
(1)
7
12
×
8
9
=
14
27
(2)
3
4
-0.5=0.25;
(3)5.2+1.91=7.11;
(4)
12
25
×25%=
3
25
(5)1-0.33=0.67;(6)40÷9=4
4
9
故答案依次为:
14
27
,0.25,7.11,
3
25
,0.67,4
4
9
 
 
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