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VA ROG!!! DAU COROANA!!!! Toate exercitiile plus calculele efectuate gen : 5-4=1, plus 55 de puncte!!!!!​

VA ROG DAU COROANA Toate Exercitiile Plus Calculele Efectuate Gen 541 Plus 55 De Puncte class=

Răspuns :

1a

12 - 8 + 4 = 8 (B)

1b

18 : 3 × 6 = 6 × 6 = 36

1c

18 : 3² = 18 : 9 = 2

1d

12 + 6 : 3 = 12 + 2 = 14

2

7×8 : 2² + 18 : 3 × 2 - 2⁰ =

= 56 : 4 + 6 × 2 - 1

= 14 + 12 - 1

= 25

3

36 + 6(8 - 2×3) =

= 36 + 6(8 - 6)

= 36 + 6×2

= 36 + 12

= 48 (B)

4

{8 + 2[9 + 9(7 + 2×3)]}×2 - 4×23 =

= {8 + 2[9 + 9(7 + 6)]}×2 - 92

= [8 + 2(9 + 9×13)]×2 - 92

= [8 + 2(9 + 117)]×2 - 92

= (8 + 2×126)×2 - 92

= (8 + 252)×2 - 92

= 260×2 - 92

= 520 - 92

= 428

5

a = 5 - 4[5 - 4(5 - 4)]

= 5 - 4(5 - 4×1)

= 5 - 4

= 1

b = 5 + 4[5 + 4(5 + 4)]

= 5 + 4(5 + 4×9)

= 5 + 4(5 + 36)

= 5 + 4×41

= 5 + 164

= 169

a×b = 1×169 = 169 = 13²

6

3x10 - 5x2 - 4x3 =

= 30 - 10 - 12

= 8 lei

7a

18 : 6 - 3 = 3 - 3 = 0 (F)

(1 + 2³)×3 + 1 = (1 + 8)×3 + 1 = 9×3 + 1 = 27 + 1 = 28 (F)

x = (3×5² + 1) - [(2 + 3×5²) : 11 + 1]

= (3x25 + 1) - [(2 + 3×25) : 11 + 1]

= (75 + 1) - [(2 + 75) : 11 + 1]

= 76 - 77 : 11 + 1

= 77 - 7

= 70

9

[(25 + 250) : 5 - 4]×6 =

= (300 : 5 - 4)×6

= (60 - 4)×6

= 56×6

= 336