6 x (-9)

(a)  

(-9) x (-5)

(a)  

9 x (-10)

(a)  

(-1) (-1) (-1)

(a)  

(-2) (-2) x 2

(a)  

12 x (-8)

(a)  

(-20) (-20)

(a)  

(-9) (-11)

(a)  

9 x (-11)

(a)  

(-9) x 11

(a)  

9 x 11

(a)  

5 x 6 x (-1)

(a)  

(-2) (-1) (-3) (-5)

(a)  

(-3) (-5) (-2) (5)

(a)  

9 $$\div$$  3

(a)  

(-24) $$\div$$  8

(a)  

55 $$\div$$  (-11)

(a)  

(-72) $$\div$$  (-12)

(a)  

(-100) $$\div$$  10

(a)  

(-100) $$\div$$  10 $$\div$$  (-1)

(a)  

(-16) $$\div$$  (-4)

(a)  

(-27) $$\div$$  (-3) x (-1)

(a)  

(-48) $$\div$$  6

(a)  

64 $$\div$$  (-8)

(a)  

(-84) $$\div$$  (-7) $$\div$$  (-3)

(a)  

(-100) $$\div$$  (-10) $$\div$$  (-5)

(a)  

70 $$\div$$  (-10)

(a)  

b $$\div$$  7 = -11 แล้ว b มีค่าเท่าไร

(a)  

20 $$\div$$  b = -2 แล้ว b มีค่าเท่าไร

(a)