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=3-58÷2528-310=45×[1316÷(34+13)]715÷[1-(45-23)]=-数学

题目简介

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=3-58÷2528-310=45×[1316÷(34+13)]715÷[1-(45-23)]=-数学

题目详情

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
)]=
题型:解答题难度:中档来源:不详

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-class="stub"5
8
÷class="stub"25
28
-class="stub"3
10

=3-(class="stub"7
10
+class="stub"3
10

=3-1
=2;

(4)class="stub"4
5
×[class="stub"13
16
÷(class="stub"3
4
+class="stub"1
3
)]
=class="stub"4
5
×[class="stub"13
16
÷class="stub"5
6
]
=class="stub"4
5
×
class="stub"39
40

=class="stub"39
50


(5)class="stub"7
15
÷[1-(class="stub"4
5
-class="stub"2
3
)]
=class="stub"7
15
÷[1-class="stub"2
15
]
=class="stub"7
15
÷class="stub"13
15

=class="stub"7
13

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