Question

afla caturile ,folosind scaderea repetata,apoi verifica,folosind inmultirea
21:3
36:4
42:6
49:7
63:7
56:8
54:6
81:9

Answer 1

21-7-7-7=0
36-4-4-4-4-4-4-4-4-4=0
42-6-6-6-6-6-6-6=0
49-7-7-7-7-7-7-7=0
63-7-7-7-7-7-7-7-7-7=0
56-8-8-8-8-8-8-8=0
54-6-6-6-6-6-6-6-6-6=0
81-9-9-9-9-9-9-9-9-9=0

7x3=21
9x4=36
6x7=42
7x7=49
7x9=63
8x7=56
6x9=54
9x9=81

Bafta

Answer 2

21 : 3 = 7
21 - 3 - 3 - 3 - 3 - 3 - 3 - 3 = 0
7 x 3 = 21

36 : 4 = 9
36 - 4 - 4 - 4 - 4 - 4 - 4 - 4 - 4 - 4 = 0
9 x 4 = 36

42 : 6 = 7
42 - 6 - 6 - 6 - 6 - 6 - 6 - 6 = 0
6 x 7 = 42

49 : 7 = 7
49 - 7 - 7 - 7 - 7 - 7 - 7 - 7 = 0
7 x 7 = 49

63 : 7 = 9
63 - 7 - 7 - 7 - 7 - 7 - 7 - 7 - 7 - 7 = 0
7 x 9 = 63

56 : 8 = 7
56 - 8 - 8 - 8 - 8 - 8 - 8 - 8 = 0
7 x 8 = 56

54 : 6 = 9
54 - 6 - 6 - 6 - 6 - 6 - 6 - 6 - 6 - 6 = 0
6 x 9 = 54

81 : 9 = 9 
81 - 9 - 9 - 9 - 9 - 9 - 9 - 9 - 9 - 9 = 0
9 x 9 = 81