89×11121516×114-1516×1415×(23+35)417×(25×51)13×12+12×232534×4710×101-71063100×101(712-15)×60.-数学

题目简介

89×11121516×114-1516×1415×(23+35)417×(25×51)13×12+12×232534×4710×101-71063100×101(712-15)×60.-数学

题目详情

8
9
×
11
12
15
16
×1
1
4
-
15
16
×
1
4
15×(
2
3
+
3
5
)
4
17
×(25×51)
1
3
×
1
2
+
1
2
×
2
3
25
3
4
×4
7
10
×101-
7
10
63
100
×101
7
12
-
1
5
)×60.
题型:解答题难度:中档来源:不详

答案

(1)class="stub"8
9
×class="stub"11
12
=class="stub"22
27


(2)class="stub"15
16
×1class="stub"1
4
-class="stub"15
16
×class="stub"1
4

=class="stub"15
16
×
(1class="stub"1
4
-class="stub"1
4
),
=class="stub"15
16
×
1,
=class="stub"15
16


(3)15×(class="stub"2
3
+class="stub"3
5
),
=15×class="stub"2
3
+15×class="stub"3
5

=10+9,
=19;

(4)class="stub"4
17
×
(25×51),
=(class="stub"4
17
×
51)×25,
=12×25,
=300;

(5)class="stub"1
3
×class="stub"1
2
+class="stub"1
2
×class="stub"2
3

=class="stub"1
2
×
class="stub"1
3
+class="stub"2
3
),
=class="stub"1
2
×
1,
=class="stub"1
2


(6)25class="stub"3
4
×4,
=25×4+class="stub"3
4
×
4,
=100+3,
=103;

(7)class="stub"7
10
×101-class="stub"7
10

=class="stub"7
10
×
(101-1),
=class="stub"7
10
×
100,
=70;

(8)class="stub"63
100
×101,
=class="stub"63
100
×100+class="stub"63
100
×1,
=63+class="stub"63
100

=63.63;

(9)(class="stub"7
12
-class="stub"1
5
)×60,
=class="stub"7
12
×60-class="stub"1
5
×60,
=35-12,
=24.

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