计算下面各题,能简算的要简算.(512+38)×81536×(13-18)712×11+71278×349×89835×(14+13)(3-151)×17.-数学

题目简介

计算下面各题,能简算的要简算.(512+38)×81536×(13-18)712×11+71278×349×89835×(14+13)(3-151)×17.-数学

题目详情

计算下面各题,能简算的要简算.
5
12
+
3
8
)×
8
15
36×(
1
3
-
1
8
7
12
×11+
7
12
7
8
×
3
49
×
8
9
8
35
×
1
4
+
1
3
(3-
1
51
)×17.
题型:解答题难度:中档来源:不详

答案

(1)(class="stub"5
12
+class="stub"3
8
)×class="stub"8
15

=class="stub"5
12
×class="stub"8
15
+class="stub"3
8
×class="stub"8
15

=class="stub"2
9
+class="stub"1
5

=class="stub"19
45


(2)36×(class="stub"1
3
-class="stub"1
8
),
=36×class="stub"1
3
-36×class="stub"1
8

=12-4.5,
=7.5;

(3)class="stub"7
12
×11+class="stub"7
12

=class="stub"7
12
×(11+1),
=class="stub"7
12
×12,
=7;

(4)class="stub"7
8
×class="stub"3
49
×class="stub"8
9

=class="stub"3
56
×class="stub"8
9

=class="stub"1
21


(5)class="stub"8
35
×
class="stub"1
4
+class="stub"1
3
),
=class="stub"8
35
×class="stub"7
12

=class="stub"2
15


(6)(3-class="stub"1
51
)×17,
=3×17-class="stub"1
51
×17,
=51-class="stub"1
3

=50class="stub"2
3

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