问题 解答题
计算,能简算的要简算.
(1)32×0.25×1.25 (2)38×
3
37
(3)8×
2
9
+
2
9
(4)
4
5
÷
7
10
×14
(5)4.27÷0.7×1.3(6)
6
25
÷9+
6
25
×
8
9
答案

解(1)32×0.25×1.25

=(4×8)×0.25×1.25

=(4×0.25)×(8×1.25)

=1×10

=10

(2))38×

3
37

=(37+1)×

3
37

=37×

3
37
+1×
3
37

=3+

3
37

=3

3
37

(3)8×

2
9
+
2
9

=

2
9
×(8+1)

=

2
9
×9

=2

(4)

4
5
÷
7
10
×14

=

8
7
×14

=16

(5)4.27÷0.7×1.3

=6.1×1.3

=7.93

(6)

6
25
÷9+
6
25
×
8
9

6
25
×
1
9
+
6
25
×
8
9

=

6
25
×(
1
9
+
8
9

=

6
25
×1

=

6
25

填空题
单项选择题