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MathsAges 13-15

Calculating the mean

Sum a set of four data values and divide by four to calculate the arithmetic mean. Review suitability for your learners before teaching.

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Age band:Ages 10-12Ages 13-15

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Worksheet StudioPractice pack · Ages 13-15

Calculating the mean

Take your time. Show your thinking.

  1. 1. Find the mean of 24, 23, 31 and 30.

    24 · 23 · 31 · 30 · Calculating the mean

  2. 2. Find the mean of 14, 14, 22 and 22.

    14 · 14 · 22 · 22 · Calculating the mean

  3. 3. Find the mean of 11, 12, 18 and 19.

    11 · 12 · 18 · 19 · Calculating the mean

  4. 4. Find the mean of 22, 22, 26 and 26.

    22 · 22 · 26 · 26 · Calculating the mean

  5. 5. Find the mean of 29, 26, 34 and 31.

    29 · 26 · 34 · 31 · Calculating the mean

  6. 6. Find the mean of 1, 5, 7 and 11.

    1 · 5 · 7 · 11 · Calculating the mean

  7. 7. Find the mean of 3, 2, 10 and 9.

    3 · 2 · 10 · 9 · Calculating the mean

  8. 8. Find the mean of 23, 27, 29 and 33.

    23 · 27 · 29 · 33 · Calculating the mean

  9. 9. Find the mean of 16, 19, 23 and 26.

    16 · 19 · 23 · 26 · Calculating the mean

  10. 10. Find the mean of 18, 19, 23 and 24.

    18 · 19 · 23 · 24 · Calculating the mean

  11. 11. Find the mean of 21, 21, 23 and 23.

    21 · 21 · 23 · 23 · Calculating the mean

  12. 12. Find the mean of 2, 2, 10 and 10.

    2 · 2 · 10 · 10 · Calculating the mean
12 questions · Seed 52 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 13-15

Calculating the mean

Answers and reasoning. Review before teaching.

  1. 1. Find the mean of 24, 23, 31 and 30.

    27

    Sum = 24 + 23 + 31 + 30 = 108. Divide by 4: 108 ÷ 4 = 27.

  2. 2. Find the mean of 14, 14, 22 and 22.

    18

    Sum = 14 + 14 + 22 + 22 = 72. Divide by 4: 72 ÷ 4 = 18.

  3. 3. Find the mean of 11, 12, 18 and 19.

    15

    Sum = 11 + 12 + 18 + 19 = 60. Divide by 4: 60 ÷ 4 = 15.

  4. 4. Find the mean of 22, 22, 26 and 26.

    24

    Sum = 22 + 22 + 26 + 26 = 96. Divide by 4: 96 ÷ 4 = 24.

  5. 5. Find the mean of 29, 26, 34 and 31.

    30

    Sum = 29 + 26 + 34 + 31 = 120. Divide by 4: 120 ÷ 4 = 30.

  6. 6. Find the mean of 1, 5, 7 and 11.

    6

    Sum = 1 + 5 + 7 + 11 = 24. Divide by 4: 24 ÷ 4 = 6.

  7. 7. Find the mean of 3, 2, 10 and 9.

    6

    Sum = 3 + 2 + 10 + 9 = 24. Divide by 4: 24 ÷ 4 = 6.

  8. 8. Find the mean of 23, 27, 29 and 33.

    28

    Sum = 23 + 27 + 29 + 33 = 112. Divide by 4: 112 ÷ 4 = 28.

  9. 9. Find the mean of 16, 19, 23 and 26.

    21

    Sum = 16 + 19 + 23 + 26 = 84. Divide by 4: 84 ÷ 4 = 21.

  10. 10. Find the mean of 18, 19, 23 and 24.

    21

    Sum = 18 + 19 + 23 + 24 = 84. Divide by 4: 84 ÷ 4 = 21.

  11. 11. Find the mean of 21, 21, 23 and 23.

    22

    Sum = 21 + 21 + 23 + 23 = 88. Divide by 4: 88 ÷ 4 = 22.

  12. 12. Find the mean of 2, 2, 10 and 10.

    6

    Sum = 2 + 2 + 10 + 10 = 24. Divide by 4: 24 ÷ 4 = 6.

12 questions · Seed 52 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 13-15

Calculating the mean

Take your time. Show your thinking.

  1. 1. Find the mean of 24, 23, 31 and 30.

    24 · 23 · 31 · 30 · Calculating the mean

  2. 2. Find the mean of 14, 14, 22 and 22.

    14 · 14 · 22 · 22 · Calculating the mean

  3. 3. Find the mean of 11, 12, 18 and 19.

    11 · 12 · 18 · 19 · Calculating the mean

  4. 4. Find the mean of 22, 22, 26 and 26.

    22 · 22 · 26 · 26 · Calculating the mean

  5. 5. Find the mean of 29, 26, 34 and 31.

    29 · 26 · 34 · 31 · Calculating the mean

  6. 6. Find the mean of 1, 5, 7 and 11.

    1 · 5 · 7 · 11 · Calculating the mean

  7. 7. Find the mean of 3, 2, 10 and 9.

    3 · 2 · 10 · 9 · Calculating the mean

  8. 8. Find the mean of 23, 27, 29 and 33.

    23 · 27 · 29 · 33 · Calculating the mean

  9. 9. Find the mean of 16, 19, 23 and 26.

    16 · 19 · 23 · 26 · Calculating the mean

  10. 10. Find the mean of 18, 19, 23 and 24.

    18 · 19 · 23 · 24 · Calculating the mean

  11. 11. Find the mean of 21, 21, 23 and 23.

    21 · 21 · 23 · 23 · Calculating the mean

  12. 12. Find the mean of 2, 2, 10 and 10.

    2 · 2 · 10 · 10 · Calculating the mean
12 questions · Seed 52 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 13-15

Calculating the mean

Answers and reasoning. Review before teaching.

  1. 1. Find the mean of 24, 23, 31 and 30.

    27

    Sum = 24 + 23 + 31 + 30 = 108. Divide by 4: 108 ÷ 4 = 27.

  2. 2. Find the mean of 14, 14, 22 and 22.

    18

    Sum = 14 + 14 + 22 + 22 = 72. Divide by 4: 72 ÷ 4 = 18.

  3. 3. Find the mean of 11, 12, 18 and 19.

    15

    Sum = 11 + 12 + 18 + 19 = 60. Divide by 4: 60 ÷ 4 = 15.

  4. 4. Find the mean of 22, 22, 26 and 26.

    24

    Sum = 22 + 22 + 26 + 26 = 96. Divide by 4: 96 ÷ 4 = 24.

  5. 5. Find the mean of 29, 26, 34 and 31.

    30

    Sum = 29 + 26 + 34 + 31 = 120. Divide by 4: 120 ÷ 4 = 30.

  6. 6. Find the mean of 1, 5, 7 and 11.

    6

    Sum = 1 + 5 + 7 + 11 = 24. Divide by 4: 24 ÷ 4 = 6.

  7. 7. Find the mean of 3, 2, 10 and 9.

    6

    Sum = 3 + 2 + 10 + 9 = 24. Divide by 4: 24 ÷ 4 = 6.

  8. 8. Find the mean of 23, 27, 29 and 33.

    28

    Sum = 23 + 27 + 29 + 33 = 112. Divide by 4: 112 ÷ 4 = 28.

  9. 9. Find the mean of 16, 19, 23 and 26.

    21

    Sum = 16 + 19 + 23 + 26 = 84. Divide by 4: 84 ÷ 4 = 21.

  10. 10. Find the mean of 18, 19, 23 and 24.

    21

    Sum = 18 + 19 + 23 + 24 = 84. Divide by 4: 84 ÷ 4 = 21.

  11. 11. Find the mean of 21, 21, 23 and 23.

    22

    Sum = 21 + 21 + 23 + 23 = 88. Divide by 4: 88 ÷ 4 = 22.

  12. 12. Find the mean of 2, 2, 10 and 10.

    6

    Sum = 2 + 2 + 10 + 10 = 24. Divide by 4: 24 ÷ 4 = 6.

12 questions · Seed 52 · Age guidance, not curriculum certification