问题 解答题
320+60=670-500=400-260=650-180=37万+35万=100万-67万=
90×60=810÷9=199+85=4×12×25=90÷2÷3=1-
5
6
=
0÷58=
1
10
+
9
10
=
5
7
-
4
7
=
1
9
+
4
9
=
答案

320+60=380,670-500=270,400-260=140,650-180=470,37万+35万=72万,100万-67万=33万,
90×60=5400,810÷9=90,199+85=284,4×12×25=1200,90÷2÷3=15,1-
5
6
=
1
6
0÷58=0,
1
10
+
9
10
=1,
5
7
-
4
7
=
1
7
1
9
+
4
9
=
5
9

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