Question

descompune numerele 38, 45, 56, 72, 68, 71

Answer 1

38=3 x 10+8

38= 30+8

38 = 15 x2 + 4 x2

45 = 4 x 10 + 5

45 = 40+5

45 = 9 x 5

56 = 50+6

56 = 5 x 10 + 2x3

72 = 70+2

72 = 7 x10 + 2

68 = 60+8

68 = 6 x10 +2x4

71 = 70+1

71 = 7x10 + 1

71 = 35x2 + 1