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.
36/38 (42/44)
(100% ; 70 /50 ) — 400 (500) ; 6.
. .
1- (= . ): .
2- (= . ): .
3- (= . ): .
. .
1- (= ): .
2- (= . ): .
10 + 3 + 2 . . . . . , , . 1- 20- .
— , — .
15,5 . 25 . = 10 x 10 c, 6.
. .
( ) . 6 35 (40) . 1 = 3 . 1.
, 2- . , , 7 . .
4 c = 10 . (8 c = 20 .) 40 (45) . = 75 (85) . .
28 c = 70 . (36 c = 90 .) .
52 c = 129 . (64 c = 159 .) . (= 10- (20-) . ) 40 (45) . = 35 (40) . ( , ).
56 c = 140 . (72 c = 180 .) 1 = 2 . 2 .
, , ( ) .
40 (60) . 3 (4) (= ) . / .
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