计算题(1)(-20)+(-18)-(-14)(2) (+ 3 2 )- 5 12 - 5 2 +(- 7 12 ) (

计算题
(1)(-20)+(-18)-(-14)
(2) (+
3
2
)-
5
12
-
5
2
+(-
7
12
)

(3)-36÷(
1
2
+
5
6
-
7
12

(4) - 1 4 -
1
6
×[3- (-3) 2 ]

(5) (-
2
3
-
5
6
+
11
12
1
24

(6)(-2) 3 ÷16-(-0.125)×(-4) 2
(7) -8-[-7+(1-
2
3
×0.6)÷(-3)]

(8) |-
7
9
|÷(
2
3
-
1
5
)-
1
3
×(-4 ) 2
jingshui2 1年前 已收到1个回答 举报

刿曰可矣 幼苗

共回答了20个问题采纳率:85% 举报

(1)(-20)+(-18)-(-14)
=-38+14
=-24;

(2) (+
3
2 )-
5
12 -
5
2 +(-
7
12 )
=(
3
2 -
5
2 )-(
5
12 +
7
12 )
=-1-1
=-2;

(3)-36÷(
1
2 +
5
6 -
7
12 )
=-36÷
3
4
=-48;

(4) - 1 4 -
1
6 ×[3- (-3) 2 ]
=-1-
1
6 ×[3-9]
=-1-
1
6 ×[-6]
=-1+1
=0;

(5) (-
2
3 -
5
6 +
11
12 )÷
1
24
=(-
2
3 -
5
6 +
11
12 )×24
=-
2
3 ×24-
5
6 ×24+
11
12 ×24
=-16-20+22
=-14;

(6)(-2) 3 ÷16-(-0.125)×(-4) 2
=-8÷16-(-0.125)×16
=-0.5+2
=1.5;

(7) -8-[-7+(1-
2
3 ×0.6)÷(-3)]
=-8-[-7+(1-0.4)÷(-3)]
=-8-[-7+0.6÷(-3)]
=-8-[-7-0.2]
=-8+7.2
=-0.8;

(8) |-
7
9 |÷(
2
3 -
1
5 )-
1
3 ×(-4 ) 2
=
7
9 ÷
7
15 -
1
3 ×16
=
5
3 -
16
3
=-3
2
3 .

1年前

1
可能相似的问题
Copyright © 2024 YULUCN.COM - 雨露学习互助 - 16 q. 0.234 s. - webmaster@yulucn.com