问题 解答题
203+347=4-1.7=0.28÷0.01=1.7×0.4=1-=
1-
3
11
=
2
5
÷10
=
3
7
+
5
8
+
3
8
+
4
7
=
4
5
×
5
8
=
答案

203+347=550,4-1.7=2.3,0.28÷0.01=28,1.7×0.4=0.68,
1-
3
11
=
8
11
2
5
÷10
=
1
25
3
7
+
5
8
+
3
8
+
4
7
=2,
4
5
×
5
8
=
1
2

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