脱式计算(能简算的要简算).85×0.75+15×75%57+59×32+163.68×[1÷(2.1-2.09)][(45-14)×611]÷920.-数学

题目简介

脱式计算(能简算的要简算).85×0.75+15×75%57+59×32+163.68×[1÷(2.1-2.09)][(45-14)×611]÷920.-数学

题目详情

脱式计算(能简算的要简算).
85×0.75+15×75%
5
7
+
5
9
×
3
2
+
1
6

3.68×[1÷(2.1-2.09)]
[(
4
5
-
1
4
)×
6
11
9
20
题型:解答题难度:中档来源:不详

答案

(1)85×0.75+15×75%,
=85×0.75+15×0.75,
=(85+15)×0.75,
=100×0.75,
=75;

(2)class="stub"5
7
+class="stub"5
9
×class="stub"3
2
+class="stub"1
6

=class="stub"5
7
+class="stub"5
6
+class="stub"1
6

=class="stub"5
7
+(class="stub"5
6
+class="stub"1
6
),
=class="stub"5
7
+1,
=1class="stub"5
7


(3)3.68×[1÷(2.1-2.09)],
=3.68×[1÷0.01],
=3.68×100,
=368;

(4)[(class="stub"4
5
-class="stub"1
4
)×class="stub"6
11
class="stub"9
20

=[class="stub"11
20
×class="stub"6
11
class="stub"9
20

=class="stub"6
20
÷class="stub"9
20

=class="stub"2
3

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