A.

8 13 7 5 10

21 34

95 89

0

77 68 47

42 56 62

100 1.1

B. ,

1.

2.

3.

4.

33

1.2

C.

12 13 14 15 16

25 26 27 28 29

30 31 32 33 34

46 47 48 49 50

12 13 14 15 16

1.3

1.

2.

3.

D.

D.

54

24 ____

37 ____

27

32

48

1.3

27

E.

2.

3.

30

42

1.3

F.

1.4

2 2

G. ()

1.

2.

3.

1.4

26

62

33

43

58

78

54

64

H.

1.

2.

3.

11 12

13 14

15

22 25 26

33 35 36

40 44

1. 5a

I.

1.

2.

3.

23

22

21

20

19

41 39

67

66 64

92

91

89

1. 5a

5 I 55

J.

1.

2. 3.

28 33

69

96

33 37

1.6

K.

1.

2.

3.

1.7

L. x

1.

2.

3.

1.8

M.

7 + 2 = 9

+ 4 = 4

8 + 5 = =

6 + 1 =

100 2.1(a)

N.

6

+ 2

7

+ 1

5

3 1 +

8

+

8

O.

: 23 + 7 = 30

36 + 5 =

55 + 8 =

76 + 9 =

2 1

+ 9

3 0

4 7

+ 8

______

8 8

+ 5

______

6 4

+ 7

______

2.1(b)

P.

15 + 16 = 31

I. 28 + 40 =

II. 34 + 32 =

III. 49 + 21 =

2.1(c)

Q.

2 3

+ 1 9

4 2

ii.

2

2

+ 4 8

iii.

3

4

+ 2 5

i. 2 7

+ 5 4

2.1(c)

A.

5 3

5 + 3 = 8

8

1. 14 25?

2. 32 40

5

+ 3

8

2.5

3. 36 55