Efectueaza in 2 moduri:
(6+3): 3 =
(9+6) : 3 =
(10+2): 2 =

[tex](6 + 3) \div 3 = 9 \div 3 = 3 \\ (6 + 3) \div 3 = 6 \div 3 + 3 \div 3 = 2 + 1 = 3[/tex]

[tex](9 + 6) \div 3 = 15 \div 3 = 5 \\ (9 + 6) \div 3 = 9 \div 3 + 6 \div 3 = 3 + 2 = 5[/tex]

[tex](10 + 2) \div 2 = 12 \div 2 = 6 \\ (10 + 2) \div 2 = 10 \div 2 + 2 \div 2 = 5 + 1 = 6[/tex]

(6+3):3

1. 9:3 = 3

2. 6:3+3:3 = 2+1 = 3

(9+6):3

1. 15:3 = 5

2. 9:3+6:3 = 3+2 = 5

(10+2):2

1. 12:2 = 6

2. 10:2+2:2 = 5+1 = 6