用递等式计算.(怎样算简便就怎样算)5020-2940÷28×3756×0.25+14×163×(712+59-14)72÷(76-23)×31-18×(0.32+85)(0.25+712)+(141

题目简介

用递等式计算.(怎样算简便就怎样算)5020-2940÷28×3756×0.25+14×163×(712+59-14)72÷(76-23)×31-18×(0.32+85)(0.25+712)+(141

题目详情

用递等式计算.(怎样算简便就怎样算)
5020-2940÷28×37
5
6
×0.25+
1
4
×
1
6
3×(
7
12
+
5
9
-
1
4
7
2
÷(
7
6
-
2
3
)×3
1-
1
8
×(0.32+
8
5
(0.25+
7
12
)+(
14
15
-
2
3
题型:解答题难度:中档来源:不详

答案

(1)5020-2940÷28×37,
=5020-105×37,
=5020-3885,
=1135;

(2)class="stub"5
6
×0.25+class="stub"1
4
×class="stub"1
6

=class="stub"1
4
×(class="stub"5
6
+class="stub"1
6
),
=class="stub"1
4
×1,
=class="stub"1
4


(3)3×(class="stub"7
12
+class="stub"5
9
-class="stub"1
4
),
=3×(class="stub"41
36
-class="stub"1
4
),
=3×class="stub"32
36

=2class="stub"2
3


(4)class="stub"7
2
÷(class="stub"7
6
-class="stub"2
3
)×3,
=class="stub"7
2
÷class="stub"1
2
×3,
=7×3,
=21;

(5)1-class="stub"1
8
×(0.32+class="stub"8
5
),
=1-class="stub"1
8
×1.92,
=1-0.24,
=0.76;

(6)(0.25+class="stub"7
12
)+(class="stub"14
15
-class="stub"2
3
),
=class="stub"10
12
+class="stub"4
15

=1.1.

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