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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 25, 27, 29 and 31.

    25 · 27 · 29 · 31 · Calculating the mean

  2. 2. Find the mean of 12, 12, 14 and 14.

    12 · 12 · 14 · 14 · Calculating the mean

  3. 3. Find the mean of 12, 11, 17 and 16.

    12 · 11 · 17 · 16 · Calculating the mean

  4. 4. Find the mean of 14, 12, 18 and 16.

    14 · 12 · 18 · 16 · Calculating the mean

  5. 5. Find the mean of 16, 15, 21 and 20.

    16 · 15 · 21 · 20 · Calculating the mean

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

    15 · 15 · 19 · 19 · Calculating the mean

  7. 7. Find the mean of 19, 20, 24 and 25.

    19 · 20 · 24 · 25 · Calculating the mean

  8. 8. Find the mean of 5, 8, 10 and 13.

    5 · 8 · 10 · 13 · Calculating the mean

  9. 9. Find the mean of 24, 24, 26 and 26.

    24 · 24 · 26 · 26 · Calculating the mean

  10. 10. Find the mean of 8, 8, 14 and 14.

    8 · 8 · 14 · 14 · Calculating the mean

  11. 11. Find the mean of 20, 21, 29 and 30.

    20 · 21 · 29 · 30 · Calculating the mean

  12. 12. Find the mean of 20, 19, 27 and 26.

    20 · 19 · 27 · 26 · Calculating the mean
12 questions · Seed 43 · 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 25, 27, 29 and 31.

    28

    Sum = 25 + 27 + 29 + 31 = 112. Divide by 4: 112 ÷ 4 = 28.

  2. 2. Find the mean of 12, 12, 14 and 14.

    13

    Sum = 12 + 12 + 14 + 14 = 52. Divide by 4: 52 ÷ 4 = 13.

  3. 3. Find the mean of 12, 11, 17 and 16.

    14

    Sum = 12 + 11 + 17 + 16 = 56. Divide by 4: 56 ÷ 4 = 14.

  4. 4. Find the mean of 14, 12, 18 and 16.

    15

    Sum = 14 + 12 + 18 + 16 = 60. Divide by 4: 60 ÷ 4 = 15.

  5. 5. Find the mean of 16, 15, 21 and 20.

    18

    Sum = 16 + 15 + 21 + 20 = 72. Divide by 4: 72 ÷ 4 = 18.

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

    17

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

  7. 7. Find the mean of 19, 20, 24 and 25.

    22

    Sum = 19 + 20 + 24 + 25 = 88. Divide by 4: 88 ÷ 4 = 22.

  8. 8. Find the mean of 5, 8, 10 and 13.

    9

    Sum = 5 + 8 + 10 + 13 = 36. Divide by 4: 36 ÷ 4 = 9.

  9. 9. Find the mean of 24, 24, 26 and 26.

    25

    Sum = 24 + 24 + 26 + 26 = 100. Divide by 4: 100 ÷ 4 = 25.

  10. 10. Find the mean of 8, 8, 14 and 14.

    11

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

  11. 11. Find the mean of 20, 21, 29 and 30.

    25

    Sum = 20 + 21 + 29 + 30 = 100. Divide by 4: 100 ÷ 4 = 25.

  12. 12. Find the mean of 20, 19, 27 and 26.

    23

    Sum = 20 + 19 + 27 + 26 = 92. Divide by 4: 92 ÷ 4 = 23.

12 questions · Seed 43 · 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 25, 27, 29 and 31.

    25 · 27 · 29 · 31 · Calculating the mean

  2. 2. Find the mean of 12, 12, 14 and 14.

    12 · 12 · 14 · 14 · Calculating the mean

  3. 3. Find the mean of 12, 11, 17 and 16.

    12 · 11 · 17 · 16 · Calculating the mean

  4. 4. Find the mean of 14, 12, 18 and 16.

    14 · 12 · 18 · 16 · Calculating the mean

  5. 5. Find the mean of 16, 15, 21 and 20.

    16 · 15 · 21 · 20 · Calculating the mean

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

    15 · 15 · 19 · 19 · Calculating the mean

  7. 7. Find the mean of 19, 20, 24 and 25.

    19 · 20 · 24 · 25 · Calculating the mean

  8. 8. Find the mean of 5, 8, 10 and 13.

    5 · 8 · 10 · 13 · Calculating the mean

  9. 9. Find the mean of 24, 24, 26 and 26.

    24 · 24 · 26 · 26 · Calculating the mean

  10. 10. Find the mean of 8, 8, 14 and 14.

    8 · 8 · 14 · 14 · Calculating the mean

  11. 11. Find the mean of 20, 21, 29 and 30.

    20 · 21 · 29 · 30 · Calculating the mean

  12. 12. Find the mean of 20, 19, 27 and 26.

    20 · 19 · 27 · 26 · Calculating the mean
12 questions · Seed 43 · 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 25, 27, 29 and 31.

    28

    Sum = 25 + 27 + 29 + 31 = 112. Divide by 4: 112 ÷ 4 = 28.

  2. 2. Find the mean of 12, 12, 14 and 14.

    13

    Sum = 12 + 12 + 14 + 14 = 52. Divide by 4: 52 ÷ 4 = 13.

  3. 3. Find the mean of 12, 11, 17 and 16.

    14

    Sum = 12 + 11 + 17 + 16 = 56. Divide by 4: 56 ÷ 4 = 14.

  4. 4. Find the mean of 14, 12, 18 and 16.

    15

    Sum = 14 + 12 + 18 + 16 = 60. Divide by 4: 60 ÷ 4 = 15.

  5. 5. Find the mean of 16, 15, 21 and 20.

    18

    Sum = 16 + 15 + 21 + 20 = 72. Divide by 4: 72 ÷ 4 = 18.

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

    17

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

  7. 7. Find the mean of 19, 20, 24 and 25.

    22

    Sum = 19 + 20 + 24 + 25 = 88. Divide by 4: 88 ÷ 4 = 22.

  8. 8. Find the mean of 5, 8, 10 and 13.

    9

    Sum = 5 + 8 + 10 + 13 = 36. Divide by 4: 36 ÷ 4 = 9.

  9. 9. Find the mean of 24, 24, 26 and 26.

    25

    Sum = 24 + 24 + 26 + 26 = 100. Divide by 4: 100 ÷ 4 = 25.

  10. 10. Find the mean of 8, 8, 14 and 14.

    11

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

  11. 11. Find the mean of 20, 21, 29 and 30.

    25

    Sum = 20 + 21 + 29 + 30 = 100. Divide by 4: 100 ÷ 4 = 25.

  12. 12. Find the mean of 20, 19, 27 and 26.

    23

    Sum = 20 + 19 + 27 + 26 = 92. Divide by 4: 92 ÷ 4 = 23.

12 questions · Seed 43 · Age guidance, not curriculum certification