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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 21, 25, 27 and 31.

    21 · 25 · 27 · 31 · Calculating the mean

  2. 2. Find the mean of 15, 15, 19 and 19.

    15 · 15 · 19 · 19 · Calculating the mean

  3. 3. Find the mean of 3, 3, 9 and 9.

    3 · 3 · 9 · 9 · Calculating the mean

  4. 4. Find the mean of 6, 6, 8 and 8.

    6 · 6 · 8 · 8 · Calculating the mean

  5. 5. Find the mean of 22, 22, 24 and 24.

    22 · 22 · 24 · 24 · Calculating the mean

  6. 6. Find the mean of 18, 19, 27 and 28.

    18 · 19 · 27 · 28 · Calculating the mean

  7. 7. Find the mean of 26, 26, 30 and 30.

    26 · 26 · 30 · 30 · Calculating the mean

  8. 8. Find the mean of 8, 9, 13 and 14.

    8 · 9 · 13 · 14 · Calculating the mean

  9. 9. Find the mean of 23, 20, 28 and 25.

    23 · 20 · 28 · 25 · Calculating the mean

  10. 10. Find the mean of 6, 4, 10 and 8.

    6 · 4 · 10 · 8 · Calculating the mean

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

    11 · 12 · 18 · 19 · Calculating the mean

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

    2 · 3 · 9 · 10 · Calculating the mean
12 questions · Seed 104731 · 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 21, 25, 27 and 31.

    26

    Sum = 21 + 25 + 27 + 31 = 104. Divide by 4: 104 ÷ 4 = 26.

  2. 2. Find the mean of 15, 15, 19 and 19.

    17

    Sum = 15 + 15 + 19 + 19 = 68. Divide by 4: 68 ÷ 4 = 17.

  3. 3. Find the mean of 3, 3, 9 and 9.

    6

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

  4. 4. Find the mean of 6, 6, 8 and 8.

    7

    Sum = 6 + 6 + 8 + 8 = 28. Divide by 4: 28 ÷ 4 = 7.

  5. 5. Find the mean of 22, 22, 24 and 24.

    23

    Sum = 22 + 22 + 24 + 24 = 92. Divide by 4: 92 ÷ 4 = 23.

  6. 6. Find the mean of 18, 19, 27 and 28.

    23

    Sum = 18 + 19 + 27 + 28 = 92. Divide by 4: 92 ÷ 4 = 23.

  7. 7. Find the mean of 26, 26, 30 and 30.

    28

    Sum = 26 + 26 + 30 + 30 = 112. Divide by 4: 112 ÷ 4 = 28.

  8. 8. Find the mean of 8, 9, 13 and 14.

    11

    Sum = 8 + 9 + 13 + 14 = 44. Divide by 4: 44 ÷ 4 = 11.

  9. 9. Find the mean of 23, 20, 28 and 25.

    24

    Sum = 23 + 20 + 28 + 25 = 96. Divide by 4: 96 ÷ 4 = 24.

  10. 10. Find the mean of 6, 4, 10 and 8.

    7

    Sum = 6 + 4 + 10 + 8 = 28. Divide by 4: 28 ÷ 4 = 7.

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

    15

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

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

    6

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

12 questions · Seed 104731 · 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 21, 25, 27 and 31.

    21 · 25 · 27 · 31 · Calculating the mean

  2. 2. Find the mean of 15, 15, 19 and 19.

    15 · 15 · 19 · 19 · Calculating the mean

  3. 3. Find the mean of 3, 3, 9 and 9.

    3 · 3 · 9 · 9 · Calculating the mean

  4. 4. Find the mean of 6, 6, 8 and 8.

    6 · 6 · 8 · 8 · Calculating the mean

  5. 5. Find the mean of 22, 22, 24 and 24.

    22 · 22 · 24 · 24 · Calculating the mean

  6. 6. Find the mean of 18, 19, 27 and 28.

    18 · 19 · 27 · 28 · Calculating the mean

  7. 7. Find the mean of 26, 26, 30 and 30.

    26 · 26 · 30 · 30 · Calculating the mean

  8. 8. Find the mean of 8, 9, 13 and 14.

    8 · 9 · 13 · 14 · Calculating the mean

  9. 9. Find the mean of 23, 20, 28 and 25.

    23 · 20 · 28 · 25 · Calculating the mean

  10. 10. Find the mean of 6, 4, 10 and 8.

    6 · 4 · 10 · 8 · Calculating the mean

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

    11 · 12 · 18 · 19 · Calculating the mean

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

    2 · 3 · 9 · 10 · Calculating the mean
12 questions · Seed 104731 · 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 21, 25, 27 and 31.

    26

    Sum = 21 + 25 + 27 + 31 = 104. Divide by 4: 104 ÷ 4 = 26.

  2. 2. Find the mean of 15, 15, 19 and 19.

    17

    Sum = 15 + 15 + 19 + 19 = 68. Divide by 4: 68 ÷ 4 = 17.

  3. 3. Find the mean of 3, 3, 9 and 9.

    6

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

  4. 4. Find the mean of 6, 6, 8 and 8.

    7

    Sum = 6 + 6 + 8 + 8 = 28. Divide by 4: 28 ÷ 4 = 7.

  5. 5. Find the mean of 22, 22, 24 and 24.

    23

    Sum = 22 + 22 + 24 + 24 = 92. Divide by 4: 92 ÷ 4 = 23.

  6. 6. Find the mean of 18, 19, 27 and 28.

    23

    Sum = 18 + 19 + 27 + 28 = 92. Divide by 4: 92 ÷ 4 = 23.

  7. 7. Find the mean of 26, 26, 30 and 30.

    28

    Sum = 26 + 26 + 30 + 30 = 112. Divide by 4: 112 ÷ 4 = 28.

  8. 8. Find the mean of 8, 9, 13 and 14.

    11

    Sum = 8 + 9 + 13 + 14 = 44. Divide by 4: 44 ÷ 4 = 11.

  9. 9. Find the mean of 23, 20, 28 and 25.

    24

    Sum = 23 + 20 + 28 + 25 = 96. Divide by 4: 96 ÷ 4 = 24.

  10. 10. Find the mean of 6, 4, 10 and 8.

    7

    Sum = 6 + 4 + 10 + 8 = 28. Divide by 4: 28 ÷ 4 = 7.

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

    15

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

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

    6

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

12 questions · Seed 104731 · Age guidance, not curriculum certification