问题 解答题
计算:
(1)
48
×
300

(2)
64
9
×
144
169

(3)
1
3
90
1
2
40

(4)
3
5
15

(5)
18
÷(3
2
×2
2
)

(6)-
2.7
33
1.1
答案

(1)原式=4

3
×10
3
=120;

(2)原式=

64
9
×
144
169
=
8
3
×
12
13
=
32
13

(3)原式=

10
×
10
=10;

(4)原式=

15
15
=1;

(5)原式=

18
12
=
3
2
12
=
2
4

(6)原式=-

27
×
33
11
=-9.

单项选择题
单项选择题