數學有向數22題,(急)要詳細計算

1.(+63)/(-7) = -9

2.(-96)/(-8) = 12

3.(-2.4)÷(+6) = -0.4

4.(-1又4分之1)÷(-1又3分之1)
(-5/4) ÷(-4/3)
15/16

5.0÷(-17) = 0

6.(-18)÷(+3)÷(-2) = 3

7.(+3)(-6)/(-9)(斜線是分線) = (-18)/(-9) = 2

8.(-8)x(-8)/(-4)(斜線是分線) = (-8) x 2 =-16

9.(+7)x(-121)÷(+11) = -77

10.2.8÷4x(-6) = -4.2

11.24÷[(-12)÷3] = 24 ÷(-4) = -6

12.(-36)÷[(-9)x2] =.(-36)÷[-18] = 2

13.(+7)x(-14/1)x(+3)(斜線是分線) = -294

14.(+18)÷(-2/9)÷(-4)(斜線是分線) = (-81) ÷ (-4) = 20.25

15.(+6)x(-10)÷(3又2分之1)(斜線是分線) =( -60)÷(7/2) = - 120/7 = -17又7分之1

16.(-7/4)x[(-5)÷(-1/16)](斜線是分線) = (35/4) )÷(-1/16) = -140

17.(+2)(-3)-(-7)(+4) =(-6) – (-28) = 22

18.(+16)+(-2)÷(-2)x(-3) = 16 + (-3) = 13

19.(-15)÷[4(-2)-(-5)] = .(-15)÷ (-3) = 5

20.(-2.7)+5.4/(+0.3)(-1) = .(-2.7)+5.4/(-0.3) = .(-2.7)+(-18) = -20.7

21.[1/4 -(1/8)](-2又3分之1) = (1/8)(7/3) = 7/24

22.(-6/5)÷3/4x(-3/8)+(-4/15)x3/2 = (-8/5) x (-3/8)+(-2/5)= (-3/5) – (2/5) = -1