1 of 7

σελ.22,23

2 of 7

3 of 7

4 of 7

19-9=

10

47-7=

40

39-9=

30

50

20

58-8=

26-6=

5 of 7

10+3

30+4

40+8

6 of 7

1

2

2Δ+9Μ

20+9

3Δ+3Μ

30+3

7 of 7

12

10+10+6

26

26

20

30