问题 解答题
30×23=80÷4=33-18=400÷5=45+27=
40×22=94-57=70×80=0÷5=41×20=
480÷2=360÷9=400÷8=210÷7=
5
9
+
2
9
=
7
10
-
4
10
=
3
5
+
1
5
=
5
9
-
3
9
=
4
7
-
2
7
=
1
3
+
2
3
=
答案

30×23=69080÷4=2033-18=15400÷5=8045+27=72
40×22=88094-57=3770×80=56000÷5=041×20=820
480÷2=240360÷9=40400÷8=50210÷7=30
5
9
+
2
9
=
7
9
7
10
-
4
10
=
3
10
3
5
+
1
5
=
4
5
5
9
-
3
9
=
2
9
4
7
-
2
7
=
2
7
1
3
+
2
3
=1

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