初中十道计算题带答案不要方程(数学)
初中十道计算题带答案不要方程(数学)
(-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。
答:详情>>