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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 17, 16, 20 and 19.

    17 · 16 · 20 · 19 · Calculating the mean

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

    12 · 11 · 19 · 18 · Calculating the mean

  3. 3. Find the mean of 15, 14, 20 and 19.

    15 · 14 · 20 · 19 · Calculating the mean

  4. 4. Find the mean of 19, 19, 23 and 23.

    19 · 19 · 23 · 23 · Calculating the mean

  5. 5. Find the mean of 13, 12, 16 and 15.

    13 · 12 · 16 · 15 · Calculating the mean

  6. 6. Find the mean of 7, 7, 13 and 13.

    7 · 7 · 13 · 13 · Calculating the mean

  7. 7. Find the mean of 27, 27, 33 and 33.

    27 · 27 · 33 · 33 · Calculating the mean

  8. 8. Find the mean of 20, 18, 26 and 24.

    20 · 18 · 26 · 24 · Calculating the mean

  9. 9. Find the mean of 23, 23, 31 and 31.

    23 · 23 · 31 · 31 · Calculating the mean

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

    23 · 27 · 29 · 33 · Calculating the mean

  11. 11. Find the mean of 12, 15, 19 and 22.

    12 · 15 · 19 · 22 · Calculating the mean

  12. 12. Find the mean of 12, 13, 17 and 18.

    12 · 13 · 17 · 18 · Calculating the mean
12 questions · Seed 48 · 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 17, 16, 20 and 19.

    18

    Sum = 17 + 16 + 20 + 19 = 72. Divide by 4: 72 ÷ 4 = 18.

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

    15

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

  3. 3. Find the mean of 15, 14, 20 and 19.

    17

    Sum = 15 + 14 + 20 + 19 = 68. Divide by 4: 68 ÷ 4 = 17.

  4. 4. Find the mean of 19, 19, 23 and 23.

    21

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

  5. 5. Find the mean of 13, 12, 16 and 15.

    14

    Sum = 13 + 12 + 16 + 15 = 56. Divide by 4: 56 ÷ 4 = 14.

  6. 6. Find the mean of 7, 7, 13 and 13.

    10

    Sum = 7 + 7 + 13 + 13 = 40. Divide by 4: 40 ÷ 4 = 10.

  7. 7. Find the mean of 27, 27, 33 and 33.

    30

    Sum = 27 + 27 + 33 + 33 = 120. Divide by 4: 120 ÷ 4 = 30.

  8. 8. Find the mean of 20, 18, 26 and 24.

    22

    Sum = 20 + 18 + 26 + 24 = 88. Divide by 4: 88 ÷ 4 = 22.

  9. 9. Find the mean of 23, 23, 31 and 31.

    27

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

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

    28

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

  11. 11. Find the mean of 12, 15, 19 and 22.

    17

    Sum = 12 + 15 + 19 + 22 = 68. Divide by 4: 68 ÷ 4 = 17.

  12. 12. Find the mean of 12, 13, 17 and 18.

    15

    Sum = 12 + 13 + 17 + 18 = 60. Divide by 4: 60 ÷ 4 = 15.

12 questions · Seed 48 · 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 17, 16, 20 and 19.

    17 · 16 · 20 · 19 · Calculating the mean

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

    12 · 11 · 19 · 18 · Calculating the mean

  3. 3. Find the mean of 15, 14, 20 and 19.

    15 · 14 · 20 · 19 · Calculating the mean

  4. 4. Find the mean of 19, 19, 23 and 23.

    19 · 19 · 23 · 23 · Calculating the mean

  5. 5. Find the mean of 13, 12, 16 and 15.

    13 · 12 · 16 · 15 · Calculating the mean

  6. 6. Find the mean of 7, 7, 13 and 13.

    7 · 7 · 13 · 13 · Calculating the mean

  7. 7. Find the mean of 27, 27, 33 and 33.

    27 · 27 · 33 · 33 · Calculating the mean

  8. 8. Find the mean of 20, 18, 26 and 24.

    20 · 18 · 26 · 24 · Calculating the mean

  9. 9. Find the mean of 23, 23, 31 and 31.

    23 · 23 · 31 · 31 · Calculating the mean

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

    23 · 27 · 29 · 33 · Calculating the mean

  11. 11. Find the mean of 12, 15, 19 and 22.

    12 · 15 · 19 · 22 · Calculating the mean

  12. 12. Find the mean of 12, 13, 17 and 18.

    12 · 13 · 17 · 18 · Calculating the mean
12 questions · Seed 48 · 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 17, 16, 20 and 19.

    18

    Sum = 17 + 16 + 20 + 19 = 72. Divide by 4: 72 ÷ 4 = 18.

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

    15

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

  3. 3. Find the mean of 15, 14, 20 and 19.

    17

    Sum = 15 + 14 + 20 + 19 = 68. Divide by 4: 68 ÷ 4 = 17.

  4. 4. Find the mean of 19, 19, 23 and 23.

    21

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

  5. 5. Find the mean of 13, 12, 16 and 15.

    14

    Sum = 13 + 12 + 16 + 15 = 56. Divide by 4: 56 ÷ 4 = 14.

  6. 6. Find the mean of 7, 7, 13 and 13.

    10

    Sum = 7 + 7 + 13 + 13 = 40. Divide by 4: 40 ÷ 4 = 10.

  7. 7. Find the mean of 27, 27, 33 and 33.

    30

    Sum = 27 + 27 + 33 + 33 = 120. Divide by 4: 120 ÷ 4 = 30.

  8. 8. Find the mean of 20, 18, 26 and 24.

    22

    Sum = 20 + 18 + 26 + 24 = 88. Divide by 4: 88 ÷ 4 = 22.

  9. 9. Find the mean of 23, 23, 31 and 31.

    27

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

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

    28

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

  11. 11. Find the mean of 12, 15, 19 and 22.

    17

    Sum = 12 + 15 + 19 + 22 = 68. Divide by 4: 68 ÷ 4 = 17.

  12. 12. Find the mean of 12, 13, 17 and 18.

    15

    Sum = 12 + 13 + 17 + 18 = 60. Divide by 4: 60 ÷ 4 = 15.

12 questions · Seed 48 · Age guidance, not curriculum certification