问题 解答题
下面各题写出必要的计算过程.
(1)
4
15
×75
(2)
7
18
×
9
14
(3)
9
14
×21×
2
9
(4)
11
14
×
7
10
×
8
33
(5)
3
5
×
5
27
×
3
8
(6)
4
5
×
5
8
×
5
12
答案

(1)

4
15
×75=
4×75
15
=20;

(2)

7
18
×
9
14
=
7×9
18×14
=
1
4

(3)

9
14
×21×
2
9
=
9×21×2
14×9
=3;

(4)

11
14
×
7
10
×
8
33
=
11×7×8
14×10×33
=
2
15

(5)

3
5
×
5
27
×
3
8
=
3×5×3
5×27×8
=
1
24

(6)

4
5
×
5
8
×
5
12
=
4×5×5
5×8×12
=
5
24

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