问题 解答题
计算下面各题,怎样计算简便就怎样计算.
888+999×888=
12.5×32×0.25=
3-
5
8
÷
25
28
-
3
10
=
4
5
×[
13
16
÷(
3
4
+
1
3
)]
7
15
÷[1-(
4
5
-
2
3
)]=
答案

(1)888+999×888

=888×(999+1)

=888×1000

=888000;

(2)12.5×32×0.25

=(12.5×8)×(4×0.25)

=100×10

=1000;

(3)3-

5
8
÷
25
28
-
3
10

=3-(

7
10
+
3
10

=3-1

=2;

(4)

4
5
×[
13
16
÷(
3
4
+
1
3
)]

=

4
5
×[
13
16
÷
5
6
]

=

4
5
×
39
40

=

39
50

(5)

7
15
÷[1-(
4
5
-
2
3
)]

=

7
15
÷[1-
2
15
]

=

7
15
÷
13
15

=

7
13

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