г , , /. . г , , , .
. 500 .
1 .
2 , 500 ,
3 , 5 .
4 . , , [.4] 6 , 5 .
5 . , , , 3 × 6 = 18. , , 2 × 5 = 10. 10 + 18 = 28 .
6 7 ,
.
8 , , [.4], 18 . 12: 18 = 0,66 .
9 . 1 × 2 = 2 , 2 .
10 11 , .
12 . , [.4], 2 .×. 28 . 28 × 2 = 56 .×.
13 . , , 32 .×. 2 . 2 × 32 = 64 .×.
14 , .
( ) , , ( [.4] 1 2 ) ( [.4] 1 18 ). - ○, - ●, - ∆, - ▲.
г .