σελ.16,17

50+20=

30+20=

40+20=

50-40=

70-20=

70-30=

70

50

60

10

50

40

10

+

10

=

40λ.

20

+

10

=

30λ.

40

+

30

=

70λ.

20

+

20

+

10

=

50λ.

50

50

-

20

=

30λ.

30

9+6=

15

<

9+6=

1

5

15

8+5=

8+5=

<

2

3

13

13

9+5=

<

1

4

14

9+5=

14

17-9=

<

7

2

8

17-9=

8

16-7=

16-7=

<

6

1

9

9

13-7=

13-7=

<

3

4

6

6

6

2

4

5

5

6

0

7

0

7

5

2

6

5

0

3

1

6

0

3

0

2

9

3

13

15

17

19

21

23

25

27

29

31

17

20

23

26

29

32

35

38

41