. .
12,5 . 26 . = 10 x 10 .
62 (72) 1 = 3 , 1 .
.
35 = 90 1 x 3 ., 2- 1 x 2 . 1 x 1 . = 50 .
50 = 130 (54 = 140 ) 14 . .
2- 1 x 3 ., 2 x 2 . 1 x 1 .
54 = 140 (58 = 150 ) 10 (15) . .
, , 42 = 110 (46 = 120 ) 4 ., 2- 1 x 4 ., 1 x 3 ., 1 x 2 . 4 x 1 .
46 (56) , .
, 2 .
2,5 = 6 1 x 2 ., 2- 16 x 1 . (14 x 1 . 2 x 2 .).
15,5 = 40 10 (16) .
.
96 4 (= 1 , 1 ). , .
