问题 解答题
直接写得数.
1-
2
5
+
3
5
=
3
2
×
2
3
=
0.5-
1
5
+0.5-
1
5
=
8.1+
1
4
=
1
4
+
1
3
)×24=
3
4
×7÷
3
4
=
9-0.9=72÷0.4=1.25×8=
答案

1-
2
5
+
3
5
=1
1
5
3
2
×
2
3
=
4
9
0.5-
1
5
+0.5-
1
5
=
3
5
8.1+
1
4
=8.35,
1
4
+
1
3
)×24=14,
3
4
×7÷
3
4
=87
1
9
9-0.9=8.1,72÷0.4=180,1.25×8=10.

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