Answer Keys

Math Kangaroo will post the answer key two months after the first day of the competition. Math Kangaroo plans to release the results before or on June 1st. The results will be available in the student’s user account that was used for registration. For help with finding your child’s MK result click here.

2021 Answer Key

Question #

Level 1 & 2

Level 3 & 4

Level 5 & 6

Level 7 & 8

Level 9 & 10

Level 11 & 12

1

E

C

D

A

C

E

2

B

C

A

E

B

A

3

A

B

E

D

B

D

4

D

B

D

B

B

E

5

A

E

B

A

B

A

6

D

C

C

A

C

B

7

E

D

B

B

C

E

8

B

C

E

E

C

C

9

D

A

E

B

D

C

10

D

E

D

E

E

D

11

C

E

B

D

B

D

12

E

C

B

E

C

D

13

A

C

D

C

A

D

14

C

E

B

B

A

A

15

B

D

C

D

A

B

16

D

B

A

C

E

A

17

D

D

E

B

E

B

18

A

E

C

C

C

B

19

C

D

D

E

C

E

20

C

A

B

C

E

C

21

B

D

A

C

E

E

22

C

E

B

D

E

B

23

E

D

A

B

A

E

24

C

A

C

B

E

D

25

E

D

B

B

26

C

B

D

A

27

D

C

D

C

28

B

D

D

C

29

B

A

C

B

30

E

C

D

B

2020 Answer Key

Question #

Level 1 & 2

Level 3 & 4

Level 5 & 6

Level 7 & 8

Level 9 & 10

Level 11 & 12

1

D

E

E

B

B

D

2

E

E

E

A

D

B

3

A

A

D

C

E

B

4

E

A

B

A

A

A

5

A

E

E

E

B

C

6

D

D

C

E

C

E

7

E

E

A

D

B

D

8

D

C

B

B

E

D

9

C

C

C

D

C

E

10

C

C

E

B

A

D

11

E

D

A

A

D

E

12

C

E

E

C

B

B

13

B

D

A

B

B

B

14

A

A

B

C

B

B

15

B

D

C

C

A

B

16

D

B

C

C

C

A

17

D

B

E

A

E

B

18

D

C

D

D

D

A

19

C

A

B

B

A

C

20

C

D

A

E

D

B

21

B

D

B

A

B

D

22

E

D

E

A

C

E

23

C

B

B

D

E

D

24

B

D

C

B

D

D

25

D

C

C

E

26

D

C

C

C

27

B

E

C

A

28

A

D

A

A

29

E

D

B

C

30

B

C

D

C

2019 Answer Key

Question #

Level 1 & 2

Level 3 & 4

Level 5 & 6

Level 7 & 8

Level 9 & 10

Level 11 & 12

1

D

E

B

E

D

A

2

C

C

C

E

B

E

3

C

A

C

C

E

E

4

E

D

E

D

C

D

5

B

A

E

D

B

C

6

C

A

D

D

B

B

7

A

D

D

A

C

B

8

C

B

C

B

B

C

9

E

B

B

D

A

D

10

B

C

A

A

B

D

11

A

C

C

A

C

D

12

E

E

C

B

C

B

13

B

B

C

E

E

E

14

B

A

B

B

B

E

15

E

D

A

C

D

D

16

D

D

C

C

B

C

17

D

E

B

D

A

A

18

A

C

C

B

C

B

19

D

B

A

C

D

A

20

B

E

D

C

E

E

21

C

B

C

B

A

B

22

D

E

E

B

E

B

23

A

B

D

C

B

C

24

C

D

C

E

D

E

25

B

E

C

A

26

B

A

C

D

27

D

C

D

E

28

A

E

B

C

29

D

E

A

B

30

C

D

C

C

2018 Answer Key

Question #

Level 1 & 2

Level 3 & 4

Level 5 & 6

Level 7 & 8

Level 9 & 10

Level 11 & 12

1

E

B

A

B

C

A

2

D

E

C

E

C

D

3

D

C

B

B

C

B

4

D

E

B

D

C

D

5

B

D

D

C

E

C

6

B

D

E

D

A

E

7

E

D

D

C

B

A

8

C

A

C

C

B

B

9

B

D

C

D

A

B

10

A

A

A

D

B

A

11

D

B

E

B

D

B

12

A

E

B

C

D

D

13

C

E

E

D

B

A

14

C

C

A

C

E

D

15

C

C

A

A

B

D

16

B

D

C

D

A

D

17

A

D

C

D

D

B

18

D

C

E

B

E

C

19

A

B

A

A

D

B

20

C

A

A

B

A

E

21

D

B

C

E

B

A

22

B

D

C

C

C

D

23

E

E

D

B

E

B

24

E

B

C

B

C

D

25

B

D

D

C

26

D

C

D

E

27

B

B

A

B

28

C

E

D

A

29

C

C

C

C

30

E

C

D

E

2017 Answer Key

Question #

Level 1 & 2

Level 3 & 4

Level 5 & 6

Level 7 & 8

Level 9 & 10

Level 11 & 12

1

D

E

B

B

B

C

2

C

A

C

C

E

A

3

B

E

E

C

B

C

4

A

C

D

A

C

A

5

A

A

B

B

E

C

6

A

E

A

E

C

B

7

E

C

E

D

E

A

8

C

A

C

D

C

C

9

D

E

B

B

A

B

10

A

E

D

A

C

B

11

D

B

D

E

C

A

12

E

C

C

A

E

B

13

D

D

C

D

D

E

14

A

D

C

A

C

D

15

C

C

D

E

B

B

16

B

D

E

A

B

D

17

B

C

E

B

A

E

18

C

B

D

B

C

C

19

C

E

B

B

D

D

20

E

D

C

D

A

D

21

E

C

A

C

D

C

22

D

B

D

C

E

E

23

B

E

D

B

C

E

24

E

B

C

A

E

D

25

C

D

B

E

26

C

A

E

D

27

D

D

A

D

28

D

E

B

A

29

E

D

D

E

30

C

D

A

A

2016 Answer Key

Question #

Level 1 & 2

Level 3 & 4

Level 5 & 6

Level 7 & 8

Level 9 & 10

Level 11 & 12

1

D

E

C

C

D

D

2

B

E

E

A

B

C

3

D

A

A

C

D

B

4

E

A

C

D

A

A

5

C

D

E

B

B

A

6

B

B

B

A

D

B

7

C

A

D

C

C

C

8

A

C

C

C

D

E

9

D

B

C

B

B

E

10

C

B

B

C

E

E

11

E

C

A

E

D

D

12

C

B

C

E

A

D

13

B

D

C

C

E

C

14

B

A

D

B

C

E

15

A

C

B

B

B

B

16

E

D

E

D

E

B

17

E

D

A

D

D

B

18

A

B

D

B

C

B

19

D

D

A

D

B

A

20

D

C

C

B

A

C

21

A

B

D

D

C

C

22

E

C

B

D

C

E

23

A

E

D

E

B

D

24

C

B

B

D

E

E

25

B

E

A

A

26

D

C

A

C

27

D

A

C

B

28

E

E

A

A

29

C

C

B

A

30

E

A

D

C

2015 Answer Key

Question #

Level 1 & 2

Level 3 & 4

Level 5 & 6

Level 7 & 8

Level 9 & 10

Level 11 & 12

1

D

E

B

A

B

E

2

B

A

C

A

E

A

3

C

E

A

B

C

A

4

E

C

A

E

B

A

5

B

E

B

A

E

D

6

E

E

E

D

B

D

7

C

B

D

D

E

B

8

B

D

A

C

B

E

9

D

A

A

C

A

C

10

C

D

D

D

C

B

11

C

B

E

B

C

C

12

E

B

C

C

C

E

13

E

C

C

B

D

C

14

D

B

C

D

C

D

15

C

D

C

E

A

B

16

A

C

B

C

D

A

17

D

A

C

C

B

C

18

D

C

E

B

B

D

19

C

A

B

A

D

A

20

D

D

E

B

E

A

21

D

E

C

C

A

C

22

B

C

C

A

B

D

23

C

D

D

B

C

A

24

A

C

C

C

D

C

25

B

C

D

E

26

C

D

C

D

27

B

D

B

C

28

E

E

D

B

29

E

D

B

D

30

D

D

B

D

2014 Answer Key

Question #

Level 1 & 2

Level 3 & 4

Level 5 & 6

Level 7 & 8

Level 9 & 10

Level 11 & 12

1

B

D

C

D

B

C

2

A

D

D

D

A

C

3

D

A

D

A

E

B

4

B

D

A

B

A

C

5

C

A

A

E

C

E

6

D

E

D

E

A

E

7

D

E

B

B

B

E

8

B

C

B

E

B

D

9

A

E

B

B

E

D

10

C

E

C

D

C

C

11

D

B

E

E

C

A

12

E

D

B

B

C

B

13

C

B

D

C

B

B

14

D

B

B

E

D

C

15

B

C

B

E

A

D

16

D

B

D

C

E

D

17

B

B

A

B

E

A

18

D

C

D

E

C

B

19

E

B

E

D

D

A

20

D

C

A

A

C

C

21

E

A

D

E

D

E

22

D

D

A

D

D

D

23

A

D

E

B

D

E

24

A

D

C

D

B

A

25

E

C

C

D

26

D

A

C

A

27

B

B

B

C

28

C

C

E

B

29

C

A

B

D

30

E

B

C

D

2013 Answer Key

Question #

Level 1 & 2

Level 3 & 4

Level 5 & 6

Level 7 & 8

Level 9 & 10

Level 11 & 12

1

D

D

E

D

D

C

2

B

D

C

D

C

C

3

A

E

C

A

C

E

4

D

B

B

C

C

D

5

B

C

E

E

C

C

6

E

D

B

E

E

D

7

C

B

B

C

E

E

8

D

E

E

E

C

B

9

E

B

C

A

D

E

10

C

D

C

C

C

D

11

A

D

C

E

D

C

12

B

A

C

E

B

A

13

D

D

D

B

D

E

14

E

E

B

C

E

D

15

C

B

E

B

D

A

16

A

B

B

A

D

D

17

E

D

D

A

A

A

18

C

D

A

E

C

E

19

C

B

C

B

D

E

20

B

C

D

C

E

C

21

A

E

A

B

C

A

22

D

B

D

D

D

D

23

D

B

B

C

C

A

24

D

B

A

C

E

E

25

D

B

B

D

26

D

A

D

C

27

B

B

C

B

28

B

D

C

D

29

D

B

C

E

30

B

C

B

B

2012 Answer Key

Question #

Level 1 & 2

Level 3 & 4

Level 5 & 6

Level 7 & 8

Level 9 & 10

Level 11 & 12

1

C

B

C

B

D

E

2

B

D

C

D

D

B

3

D

B

A

A

D

C

4

D

C

C

E

E

A

5

B

A

E

C

C

C

6

C

E

C

E

A

A

7

E

B

D

C

B

D

8

C

D

A

D

D

D

9

A

E

B

D

D

E

10

B

B

B

D

D

C

11

D

E

D

C

C

A

12

D

C

B

C

B

D

13

D

D

D

B

C

A

14

D

B

C

C

D

C

15

B

D

D

C

B

C

16

B

C

D

D

E

D

17

A

D

C

C

B

E

18

E

C

D

E

D

B

19

A

D

A

D

B

C

20

C

B

C

B

D

E

21

D

E

B

E

A

E

22

E

D

D

D

D

C

23

D

E

D

B

A

D

24

C

C

B

D

C

B

25

D

D

C

D

26

B

E

C

D

27

D

B

C

A

28

D

C

C

B

29

C

C

B

E

30

B

A

D

B

2011 Answer Key

Question #

Level 1 & 2

Level 3 & 4

Level 5 & 6

Level 7 & 8

Level 9 & 10

Level 11 & 12

1

C

A

C

D

D

E

2

D

C

B

A

C

B

3

D

C

D

B

D

A

4

A

E

A

A

A

C

5

B

B

E

C

D

D

6

B

A

B

C

C

E

7

C

B

B

E

D

C

8

B

D

D

C

E

C

9

C

C

E

C

C

C

10

A

B

D

B

C

B

11

D

B

D

C

D

A

12

B

C

B

E

D

D

13

B

E

E

C

A

D

14

A

A

C

B

B

E

15

B

D

B

A

C

D

16

C

C

D

A

C

B

17

A

A

B

E

B

B

18

D

C

C

C

D

E

19

D

C

D

B

D

D

20

D

C

C

C

E

B

21

B

E

E

D

E

A

22

A

D

E

E

C

C

23

D

A

C

B

C

A

24

B

E

D

D

B

A

25

B

D

C

D

26

A

B

D

B

27

E

A

B

C

28

D

B

B

D

29

C

B

B

C

30

A

B

E

C

2010 Answer Key

Question #

Level 1 & 2

Level 3 & 4

Level 5 & 6

Level 7 & 8

Level 9 & 10

Level 11 & 12

1

C

D

B

C

D

B

2

C

C

D

C

D

C

3

C

C

C

D

C

D

4

D

C

C

A

B

D

5

B

D

C

B

B

D

6

A

A

B

C

B

D

7

C

C

B

E

E

E

8

C

B

B

B

D

B

9

D

E

E

B

C

E

10

C

B

C

C

D

E

11

B

B

E

C

A

D

12

C

D

E

D

B

A

13

B

D

D

D

B

C

14

B

C

D

B

B

C

15

A

D

D

C

E

B

16

A

A

C

A

C

A

17

C

E

A

A

D

C

18

C

C

C

B

E

A

19

C

D

C

E

C

A

20

A

D

E

B

B

E

21

A

E

D

C

B

C

22

B

B

C

C

C

D

23

B

D

B

E

B

E

24

A

E

B

B

B

B

25

E

C

B

B

26

B

C

A

C

27

E

B

E

C

28

B

A

E

E

29

D

D

A

A

30

C

D

E

C

2009 Answer Key

Question #

Level 1 & 2

Level 3 & 4

Level 5 & 6

Level 7 & 8

Level 9 & 10

Level 11 & 12

1

D

E

D

A

C

B

2

B

C

B

C

C

A

3

C

B

B

C

A

B

4

D

A

C

B

D

C

5

B

B

A

D

D

E

6

A

B

B

D

D

D

7

C

C

D

C

B

C

8

A

D

C

C

B

E

9

C

C

C

C

E

D

10

D

D

E

B

B

E

11

D

A

C

B

E

D

12

B

B

C

A

B

B

13

B

B

D

C

C

B

14

C

D

E

A

C

D

15

C

B

D

D

A

E

16

C

A

C

E

D

A

17

B

E

B

A

D

B

18

D

D

E

A

A

B

19

A

B

D

E

C

B

20

D

D

C

D

E

D

21

C

A

C

B

E

D

22

B

B

B

C

B

C

23

C

E

C

C

C

E

24

B

B

E

D

A

B

25

C

C

B

B

26

C

B

C

A

27

E

D

A

B

28

D

D

B

C

29

A

D

E

D

30

A

C

D

B

2008 Answer Key

Question #

Level 1 & 2

Level 3 & 4

Level 5 & 6

Level 7 & 8

Level 9 & 10

Level 11 & 12

1

C

C

C

B

B

C

2

D

D

C

C

B

D

3

C

B

B

B

C

B

4

A

B

D

C

D

C

5

D

D

E

C

B

D

6

C

A

C

E

D

E

7

A

E

B

B

E

B

8

D

A

E

B

B

B

9

D

E

A

E

E

C

10

A

D

E

A

D

B

11

B

E

E

C

C

E

12

C

D

B

B

B

E

13

B

E

D

A

D

A

14

C

C

E

C

A

D

15

B

B

D

A

A

B

16

D

B

D

A

A

A

17

C

C

C

C

D

C

18

B

A

C

A

A

A

19

D

B

D

E

B

20

E

C

D

B

C

21

E

E

D

B

C

22

B

C

C

D

B

23

C

D

C

D

C

24

D

C

D

E

C

25

D

C

D

B

26

C

A

A

E

27

D

B

B

D

28

D

D

A

B

29

D

C

D

E

30

C

B

C

B

2007 Answer Key

Question #

Level 1 & 2

Level 3 & 4

Level 5 & 6

Level 7 & 8

Level 9 & 10

Level 11 & 12

1

D

C

D

C

E

C

2

B

A

D

A

C

D

3

C

C

D

E

A

E

4

A

C

C

D

D

A

5

D

C

B

D

B

E

6

D

E

B

D

D

B

7

C

C

A

C

E

E

8

A

B

D

A

C

D

9

C

C

C

B

E

A

10

D

C

A

C

B

C

11

B

A

D

C

D

C

12

D

C

C

C

B

D

13

D

A

C

D

B

B

14

C

B

B

E

A

E

15

A

B

B

C

B

C

16

A

A

C

D

D

B

17

D

E

B

A

C

C

18

C

B

C

B

A

E

19

B

C

D

B

D

A

20

E

A

B

E

B

B

21

D

A

D

D

C

B

22

E

B

B

D

D

D

23

E

D

D

E

D

D

24

E

E

E

B

C

D

25

E

A

B

C

26

B

C

A

C

27

C

C

B

C

28

D

D

D

A

29

A

D

A

B

30

A

D

B

D

2006 Answer Key

Question #

Level 1 & 2

Level 3 & 4

Level 5 & 6

Level 7 & 8

Level 9 & 10

Level 11 & 12

1

D

C

D

B

D

A

2

B

B

E

D

C

B

3

D

D

D

D

D

E

4

B

A

B

E

C

B

5

C

D

E

D

E

B

6

E

E

A

B

C

D

7

A

B

D

A

D

C

8

E

B