问题 解答题
70÷5=______84÷4=______99÷3=______39÷3=______
302+488=______2800+200=______4800-400=______696-335=______
25×5=______509×3=______820×4=______308×5=______
1+
2
9
=______
1
8
-
1
8
=______
1
5
+
3
5
=______
1
15
+
3
15
=______.
答案

70÷5=1484÷4=2199÷3=3339÷3=13
302+488=7902800+200=30004800-400=4400696-335=361
25×5=125509×3=1527820×4=3280308×5=1540
1+
2
9
=
11
9
1
8
-
1
8
=0
1
5
+
3
5
=
4
5
1
15
+
3
15
=
4
15
故答案为:14,21,33,13,790,3000,4400,361,125,1627,3280,1540,
11
9
,0,
4
5
4
15

单项选择题
单项选择题