计算(能简便的要简便)40÷[(34-13)×3]85×0.75+15×75%910÷[25+(1-1011)]7.85-1.89-2.11+2.15[1-(12+16)]÷1324×(14+18-1

题目简介

计算(能简便的要简便)40÷[(34-13)×3]85×0.75+15×75%910÷[25+(1-1011)]7.85-1.89-2.11+2.15[1-(12+16)]÷1324×(14+18-1

题目详情

计算(能简便的要简便)
40÷[(
3
4
-
1
3
)×3]
85×0.75+15×75%
9
10
÷[
2
5
+(1-
10
11
)]
7.85-1.89-2.11+2.15
[1-(
1
2
+
1
6
)]÷
1
3

24×(
1
4
+
1
8
-
1
6
题型:解答题难度:中档来源:不详

答案

(1)40÷[(class="stub"3
4
-class="stub"1
3
)×3]
=40÷[class="stub"5
12
×3],
=40÷class="stub"5
4

=32;

(2)85×0.75+15×75%
=85×0.75+15×0.75,
=(85+15)×0.75,
=100×0.75,
=75;

(3)class="stub"9
10
÷[class="stub"2
5
+(1-class="stub"10
11
)]
=class="stub"9
10
÷[class="stub"2
5
+class="stub"1
11
],
=class="stub"9
10
÷class="stub"27
55

=class="stub"11
6


(4)7.85-1.89-2.11+2.15
=7.85+2.15-(1.89+2.11),
=10-4,
=6;

(5)[1-(class="stub"1
2
+class="stub"1
6
)]÷class="stub"1
3

=[1-class="stub"2
3
]÷class="stub"1
3

=class="stub"1
3
÷class="stub"1
3

=1;

(6)24×(class="stub"1
4
+class="stub"1
8
-class="stub"1
6

=24×class="stub"1
4
+24×class="stub"1
8
-24×class="stub"1
6

=6+3-4,
=5.

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