Ex: formula puteri, formule analiza financiara, inmultirea radicalilor exercitii rezolvate
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Calculati in scris catul si restul apoi efectuati proba:

49 x 4 = ?
54 : 5 = ?

62 : 3 = ?
68 : 3 = ?

86 : 4 = ?
85 : 8 = ?

89 : 4 = ?
96 : 9 = ?

Efectuati proba operatiilor de impartire: C  x I + r = D


Rezolvare

49 x 4 = 12 rest 1
proba: 12 x 4 + 1 = 48 + 1 = 49

54 : 5 = 10 rest 4
proba: 10 x 5 + 4 = 50 + 4 = 54

62 : 3 = 20 rest 2
proba: 20 x 3 + 2 = 60 + 2 = 62

68 : 3 = 22 rest 2
proba: 22 x 3 + 2 = 66 + 2 = 68

86 : 4 = 21 rest 2
proba: 21 x 4 + 2 = 84 + 2 = 86

85 : 8 = 10 rest 5
proba: 10 x 8 + 5 = 80 + 5 = 85

89 : 4 = 22 rest 1
proba: 22 x 4 + 1 = 88 + 1 = 89

96 : 9 = 10 rest 6
proba: 10 x 9 + 6 = 90 + 6 = 96



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