问题 解答题
口算.
375+125=
2.2+3.75=0.23×400=
0.9-0.26=3
1
12
×6=
0.25×12=
1.2÷0.01=35×0.01=
3
4
×1.2=
6
3
4
+0.25=
2.4-1
1
2
=
2.5+1
1
5
=
5
7
×
4
15
=
5
1
2
-
1
5
=
1
1
9
÷
2
3
=
3
2
3
÷2=
18
6
7
÷6=
275×99+275=
4
3
4
-
3
8
-
5
8
=
5.38-(1.8+2.38)=
答案

375+125=5002.2+3.75=5.950.23×400=92
0.9-0.26=0.643
1
12
×6=18
1
2
0.25×12=3
1.2÷0.01=12035×0.01=0.35
3
4
×1.2=0.9
6
3
4
+0.25=7
2.4-1
1
2
=0.9
2.5+1
1
5
=3.7
5
7
×
4
15
=
4
21
5
1
2
-
1
5
=5
3
10
1
1
9
÷
2
3
=
5
3
3
2
3
÷2=
11
6
18
6
7
÷6=3
1
7
275×99+275=27500
4
3
4
-
3
8
-
5
8
=3
3
4
5.38-(1.8+2.38)=1.2

单项选择题
单项选择题