In exercitiile de mai jos pune paranteze pentru a obtine rezultate diferite dupa model

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a) 8 x (6 + 2 x 9) - 5 x 3 = 8 x (6 + 18) - 15 = 8 x 24 - 15 = 192 - 15 = 177

8 x 6 + (2 x 9 - 5 ) x 3 = 48 + (18 - 5 ) x 3 = 48 + 13 x 3 = 48 + 39 = 87

b) 12 : 3 + (3 x 16 - 20) x 6 = 4 + (48 - 20) x 6 = 4 + 28 x 6 = 4 + 168 = 172

(12 : 3 + 3) x 16 - 20 x 6 = (4 + 3) x 16 - 20 x 6 = 7 x 16 - 20 x 6 = 112 - 120 = - 8

c) 9 x (2 + 4 x 3) + 10 : 2 = 9 x (2 + 12) + 5 = 9 x 14 + 5 = 126 + 5 = 131

9 x 2 + 4 x (3 + 10 : 2) = 9 x 2 + 4 x (3 + 5) = 9 x 2 + 4 x 8 = 18 + 32 = 50