题目内容

灵活计算(能简便的要用简便方法计算).
1.25×32×25
3
4
-
3
4
÷3+
9
25
(
4
15
+
1
6
)×30
2
5
÷(
4
5
-
2
3
)
+
3
4
(1)1.25×32×25,
=1.25×8×4×25,
=(1.25×8)×(4×25),
=10×100,
=1000;

(2)
3
4
-
3
4
÷3+
9
25

=
3
4
-
1
4
+
9
25

=
1
2
+
9
25

=
43
50


(3)(
1
5
+
1
6
)×30,
=
1
5
×30+
1
6
×30,
=6+5,
=11;

(4)
2
5
÷(
4
5
-
2
3
)
+
3
4

=
2
5
÷
2
15
+
3
4

=3+
3
4

=3
3
4
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