问题 解答题
直接写得数.
3-0.47=
2
5
÷
1
2
=
0.24×50=2-2÷7=
8.4÷0.7=0.32=1.25×9×8=80×25%=
1
4
-
1
5
=
5
9
+
5
8
)×72=
答案

3-0.47=2.53,
2
5
÷
1
2
=
4
5
0.24×50=12,2-2÷7=1
5
7
8.4÷0.7=12,0.32=0.09,1.25×9×8=90,80×25%=20,
1
4
-
1
5
=
1
20
5
9
+
5
8
)×72=85.
故答案为:53,
4
5
,12,1
5
7
,12,0.09,90,20,
1
20
,85.

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