问题 解答题
直接写出得数.
3-2
1
4
=
4
9
=
321-178+257=
0.875÷
3
8
=
409×10-409=2.25+7
1
4
=
1
3
+
4
9
)×18=
3
2
7
+2.7+2
5
7
+1.3=
答案

3-2
1
4
=
3
4
4
9
=
9
4
321-178+257=400,
0.875÷
3
8
=
7
3
409×10-409=3681,2.25+7
1
4
=9.5,
1
3
+
4
9
)×18=14,
3
2
7
+2.7+2
5
7
+1.3=10.

单项选择题 A3/A4型题
单项选择题 A1型题