问题 解答题
口算:
298+76=
6.4-4=0.25×124.8÷0.01
90%×30%
1
8
×
1
8
=
5
8
+
1
4
=
1
3
÷
5
6
=
3
8
×
4
9
=
0.3×2÷0.3×2.
答案

298+76=374; 6.4-4=2.4; 0.25×12=3; 4.8÷0.01=480;

90%×30%=0.27; 1÷

1
8
×
1
8
=1;
5
8
+
1
4
=
7
8
1
3
÷
5
6
=
2
5

3
8
×
4
9
=
1
6
;0.3×2÷0.3×2=4.

单项选择题
单项选择题