Question

Tính nhẩm:

9 x 5 =

9 x 6 =

9 x 7 =

9 x 8 =

45 : 9 =

54 : 9 =

63 : 9 =

72 : 9 =

45 : 5 =

54 : 6 =

63 : 7 =

72 : 8 =

Answer 1

9 x 5 = 45

9 x 6 = 54

9 x 7 = 63

9 x 8 = 72

45 : 9 = 5

54 : 9 = 6

63 : 9 = 7

72 : 9 = 8

45 : 5 = 9

54 : 6 = 9

63 : 7 = 9

72 : 8 = 9