Tính nhẩm: 9 x 2, 9 x 6

9 × 2

9 × 6

9 × 3

9 × 9

9 × 4

9 × 7

9 × 5

9 × 1

9 × 8

9 × 10

4 × 9

7 × 9

9 × 2 = 18

9 × 6 = 54

9 × 3 = 27

9 × 9 = 81

9 × 4 = 36

9 × 7 = 63

9 × 5 = 45

9 × 1 = 9

9 × 8 = 72

9 × 10 = 90

4 × 9 = 36

7 × 9 = 63