number plus zero (1st grade)

A

1

1 + 0 =

1

2

0 + 8 =

8

3

12 + 0 =

12

4

0 + 23 =

23

5

25 + 0  =

25

B

1

0 + 0 =

0

2

0 + 7 = 

7

3

14 + 0 =

14

4

39 + 0 = 

39

5

50 + 0 = 

50

C

1

15 + 0 =

15

2

0 + 6 =

6

3

3 + 0 =

3

4

21 + 0 =

21

5

100 + 0 = 

100

D

1

5 + 0 =

5

2

0 + 5 =

5

3

17 + 0 =

17

4

56 + 0 =

56

5

89 + 0 = 

89

E

1

9 + 0 =

9

2

0 + 2 =

2

3

20 + 0 = 

20

4

13 + 0 =

13

5

19 + 0 = 

19