2020
21
1
2
A B
12
1 A 2
A
50
B
50
C
40
30
30
B
30
C
60
3
1 A
B
C
2
A.
3 A 3 B 4
A
30 1 12
25 4= 125 8 =
310 90= 180+20=
2
1000 71 30 B. 30 C.
4 C 5
B C
7 7 7 7= 52 25 52 25= 100
50
=
70 10
400=
180 80+20=
100+100 0=
72 9 48 8= 64 64 7=
18
8
1800 800
30
19 96 962 74 10000 (59 66) 64
(639
71 9) 167 (10800
800 4)
6+8+6=20
1
A 50 60
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