math addition and subtraction

Question 1

1+1

Answer 1

2

Question 2

1+2

Question 2

1+3

Question 3

1+4

Question 4

1+5

Question 5

1+6

Question 6

1+7

Question 6

1+9

Question 7

1+8

Question 8

1+10

Question 9

1+11

Question 10

1+12

Question 11

2+1

Question 12

2+2

Question 13

2+3

Question 14

2+4

Question 15

2+5

Question 16

2+6

Question 17

2+7

Question 18

2+8

Question 19

2+10

Question 20

2+9

Question 21

2+11

Question 22

2+12

Question 23

3+1

Question 24

3+2

Question 25

3+3

Question 26

3+4

Question 27

3+5

Question 28

3+6

Question 29

3+7

Question 30

3+8

Question 31

3+9

Question 32

3+10

Question 33

3+11