问题 解答题
灵活地计算下列各题.
①(
5
6
+
3
8
)×24
②0.25×1.25÷
1
32
③6.37-
4
7
+1.63-
3
7
④4.6×101.
答案

①(

5
6
+
3
8
)×24,

=

5
6
×24+
3
8
×24,

=20+9,

=29;

②0.25×1.25÷

1
32

=0.25×1.25×32,

=0.25×1.25×4×8,

=(0.25×4)×(1.25×8),

=1×10,

=10;

③6.37-

4
7
+1.63-
3
7

=6.37+1.63-

4
7
-
3
7

=(6.37+1.63)-(

4
7
+
3
7
),

=8-1,

=7;

④4.6×101,

=4.6×(100+1),

=4.6×100+4.6×1,

=460+4.6,

=464.6.

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