能用简便方法的用简便方法计算.105×32-3232÷32125×313×0.8×310(17-19)×63-23210.5×[(6.05-3.35)÷1.5](56-34)×25÷120.75×16

题目简介

能用简便方法的用简便方法计算.105×32-3232÷32125×313×0.8×310(17-19)×63-23210.5×[(6.05-3.35)÷1.5](56-34)×25÷120.75×16

题目详情

能用简便方法的用简便方法计算.
105×32-3232÷32
125×3
1
3
×0.8×
3
10

(
1
7
-
1
9
)×63-
2
3

210.5×[(6.05-3.35)÷1.5]
(
5
6
-
3
4
2
5
÷
1
2

0.75×16+
3
4
×5-75%
题型:解答题难度:中档来源:不详

答案

(1)105×32-3232÷32,
=3360-101,
=3159;

(2)125×3class="stub"1
3
×0.8×class="stub"3
10

=125×0.8×(class="stub"10
3
×class="stub"3
10
),
=100×1,
=100;

(3)(class="stub"1
7
-class="stub"1
9
)×63-class="stub"2
3

=class="stub"1
7
×63-class="stub"1
9
×63-class="stub"2
3

=9-7-class="stub"2
3

=2-class="stub"2
3

=1class="stub"1
3


(4)210.5×[(6.05-3.35)÷1.5],
=210.5×[(6.05-3.35)÷1.5],
=210.5×[2.7÷1.5],
=210.5×1.8,
=378.9;

(5)(class="stub"5
6
-class="stub"3
4
)×class="stub"2
5
÷class="stub"1
2

=(class="stub"10
12
-class="stub"9
12
)×class="stub"2
5
×2,
=class="stub"1
12
×class="stub"2
5
×2,
=class="stub"1
15


(6)0.75×16+class="stub"3
4
×5-75%

=0.75×16+0.75×5-0.75,
=(16+5-1)×0.75,
=20×0.75,
=15.

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