题目内容

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
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
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