优质解答
(-20)-(-3)÷|-9|+2X(-5)
23+|-7|÷(-1/21)-(-5)X3
(-30)-(-20)÷5+(-6)X(-1/2)
|-12|X(-1/2)-(-8)X(-5)+30
(-7)X(-2)÷(-1)-|8|
|-20|÷(-2)X(-1/5)X3
(-50)-(-8)X|-6|÷1/3
56÷(-1/5)÷1/20+|3X1-2|
7+(-22)÷1/2-(-5)X7
81÷(-1/9)÷|1/3|-(-2)
答案
1、(-20)-(-3)÷ㄧ-9ㄧ+2×(-5)
=(-20)-(-1/3)+(-10)
=-89/3
2、 23+|-7|÷(-1/21)-(-5)X3
=23+(-147)-(-15)
=-109
3、(-30)-(-20)÷5+(-6)X(-1/2)
=-30--4+3
=-23
4、 |-12|X(-1/2)-(-8)X(-5)+30
=-6-40+30
=-16
5、(-7)X(-2)÷(-1)-|8|
=14÷-1-8
-22
6、 |-20|÷(-2)X(-1/5)X3
=-10X-1/5X3
=6
7、(-50)-(-8)X|-6|÷1/3
=-50--48除1/3
=-50--144
=94
8、 56÷(-1/5)÷1/20+|3X1-2|
=-280除1/20+1
=-5599
9、 7+(-22)÷1/2-(-5)X7
=7+-44--35
=-2
10、 81÷(-1/9)÷|1/3|-(-2)
=-729÷1/3+2
=-2187+2
=-2185
(-20)-(-3)÷|-9|+2X(-5)
23+|-7|÷(-1/21)-(-5)X3
(-30)-(-20)÷5+(-6)X(-1/2)
|-12|X(-1/2)-(-8)X(-5)+30
(-7)X(-2)÷(-1)-|8|
|-20|÷(-2)X(-1/5)X3
(-50)-(-8)X|-6|÷1/3
56÷(-1/5)÷1/20+|3X1-2|
7+(-22)÷1/2-(-5)X7
81÷(-1/9)÷|1/3|-(-2)
答案
1、(-20)-(-3)÷ㄧ-9ㄧ+2×(-5)
=(-20)-(-1/3)+(-10)
=-89/3
2、 23+|-7|÷(-1/21)-(-5)X3
=23+(-147)-(-15)
=-109
3、(-30)-(-20)÷5+(-6)X(-1/2)
=-30--4+3
=-23
4、 |-12|X(-1/2)-(-8)X(-5)+30
=-6-40+30
=-16
5、(-7)X(-2)÷(-1)-|8|
=14÷-1-8
-22
6、 |-20|÷(-2)X(-1/5)X3
=-10X-1/5X3
=6
7、(-50)-(-8)X|-6|÷1/3
=-50--48除1/3
=-50--144
=94
8、 56÷(-1/5)÷1/20+|3X1-2|
=-280除1/20+1
=-5599
9、 7+(-22)÷1/2-(-5)X7
=7+-44--35
=-2
10、 81÷(-1/9)÷|1/3|-(-2)
=-729÷1/3+2
=-2187+2
=-2185