问题 解答题
48÷6=50÷7=300×5=40×7=
200×5=208×3≈47×5≈395×8≈
2
5
+
1
5
=
2
9
+
3
9
=
1-
5
8
=
2
7
-
2
7
=
答案

48÷6=850÷7=7…1300×5=150040×7=280
200×5=1000208×3≈60047×5≈250395×8≈3200
2
5
+
1
5
=
3
5
2
9
+
3
9
=
5
9
1-
5
8
=
3
8
2
7
-
2
7
=0
故答案为:8,7…1,1500,280,1000,70,250,3200,
3
5
5
9
3
8
,0.

单项选择题
单项选择题