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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 23, 22, 26 and 25.

    23 · 22 · 26 · 25 · Calculating the mean

  2. 2. Find the mean of 11, 9, 17 and 15.

    11 · 9 · 17 · 15 · Calculating the mean

  3. 3. Find the mean of 14, 13, 17 and 16.

    14 · 13 · 17 · 16 · Calculating the mean

  4. 4. Find the mean of 12, 14, 18 and 20.

    12 · 14 · 18 · 20 · Calculating the mean

  5. 5. Find the mean of 4, 2, 10 and 8.

    4 · 2 · 10 · 8 · Calculating the mean

  6. 6. Find the mean of 17, 17, 21 and 21.

    17 · 17 · 21 · 21 · Calculating the mean

  7. 7. Find the mean of 27, 26, 34 and 33.

    27 · 26 · 34 · 33 · Calculating the mean

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

    12 · 11 · 19 · 18 · Calculating the mean

  9. 9. Find the mean of 9, 11, 15 and 17.

    9 · 11 · 15 · 17 · Calculating the mean

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

    20 · 19 · 25 · 24 · Calculating the mean

  11. 11. Find the mean of 14, 15, 21 and 22.

    14 · 15 · 21 · 22 · Calculating the mean

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

    23 · 24 · 30 · 31 · Calculating the mean
12 questions · Seed 45 · 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 23, 22, 26 and 25.

    24

    Sum = 23 + 22 + 26 + 25 = 96. Divide by 4: 96 ÷ 4 = 24.

  2. 2. Find the mean of 11, 9, 17 and 15.

    13

    Sum = 11 + 9 + 17 + 15 = 52. Divide by 4: 52 ÷ 4 = 13.

  3. 3. Find the mean of 14, 13, 17 and 16.

    15

    Sum = 14 + 13 + 17 + 16 = 60. Divide by 4: 60 ÷ 4 = 15.

  4. 4. Find the mean of 12, 14, 18 and 20.

    16

    Sum = 12 + 14 + 18 + 20 = 64. Divide by 4: 64 ÷ 4 = 16.

  5. 5. Find the mean of 4, 2, 10 and 8.

    6

    Sum = 4 + 2 + 10 + 8 = 24. Divide by 4: 24 ÷ 4 = 6.

  6. 6. Find the mean of 17, 17, 21 and 21.

    19

    Sum = 17 + 17 + 21 + 21 = 76. Divide by 4: 76 ÷ 4 = 19.

  7. 7. Find the mean of 27, 26, 34 and 33.

    30

    Sum = 27 + 26 + 34 + 33 = 120. Divide by 4: 120 ÷ 4 = 30.

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

    15

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

  9. 9. Find the mean of 9, 11, 15 and 17.

    13

    Sum = 9 + 11 + 15 + 17 = 52. Divide by 4: 52 ÷ 4 = 13.

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

    22

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

  11. 11. Find the mean of 14, 15, 21 and 22.

    18

    Sum = 14 + 15 + 21 + 22 = 72. Divide by 4: 72 ÷ 4 = 18.

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

    27

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

12 questions · Seed 45 · 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 23, 22, 26 and 25.

    23 · 22 · 26 · 25 · Calculating the mean

  2. 2. Find the mean of 11, 9, 17 and 15.

    11 · 9 · 17 · 15 · Calculating the mean

  3. 3. Find the mean of 14, 13, 17 and 16.

    14 · 13 · 17 · 16 · Calculating the mean

  4. 4. Find the mean of 12, 14, 18 and 20.

    12 · 14 · 18 · 20 · Calculating the mean

  5. 5. Find the mean of 4, 2, 10 and 8.

    4 · 2 · 10 · 8 · Calculating the mean

  6. 6. Find the mean of 17, 17, 21 and 21.

    17 · 17 · 21 · 21 · Calculating the mean

  7. 7. Find the mean of 27, 26, 34 and 33.

    27 · 26 · 34 · 33 · Calculating the mean

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

    12 · 11 · 19 · 18 · Calculating the mean

  9. 9. Find the mean of 9, 11, 15 and 17.

    9 · 11 · 15 · 17 · Calculating the mean

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

    20 · 19 · 25 · 24 · Calculating the mean

  11. 11. Find the mean of 14, 15, 21 and 22.

    14 · 15 · 21 · 22 · Calculating the mean

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

    23 · 24 · 30 · 31 · Calculating the mean
12 questions · Seed 45 · 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 23, 22, 26 and 25.

    24

    Sum = 23 + 22 + 26 + 25 = 96. Divide by 4: 96 ÷ 4 = 24.

  2. 2. Find the mean of 11, 9, 17 and 15.

    13

    Sum = 11 + 9 + 17 + 15 = 52. Divide by 4: 52 ÷ 4 = 13.

  3. 3. Find the mean of 14, 13, 17 and 16.

    15

    Sum = 14 + 13 + 17 + 16 = 60. Divide by 4: 60 ÷ 4 = 15.

  4. 4. Find the mean of 12, 14, 18 and 20.

    16

    Sum = 12 + 14 + 18 + 20 = 64. Divide by 4: 64 ÷ 4 = 16.

  5. 5. Find the mean of 4, 2, 10 and 8.

    6

    Sum = 4 + 2 + 10 + 8 = 24. Divide by 4: 24 ÷ 4 = 6.

  6. 6. Find the mean of 17, 17, 21 and 21.

    19

    Sum = 17 + 17 + 21 + 21 = 76. Divide by 4: 76 ÷ 4 = 19.

  7. 7. Find the mean of 27, 26, 34 and 33.

    30

    Sum = 27 + 26 + 34 + 33 = 120. Divide by 4: 120 ÷ 4 = 30.

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

    15

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

  9. 9. Find the mean of 9, 11, 15 and 17.

    13

    Sum = 9 + 11 + 15 + 17 = 52. Divide by 4: 52 ÷ 4 = 13.

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

    22

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

  11. 11. Find the mean of 14, 15, 21 and 22.

    18

    Sum = 14 + 15 + 21 + 22 = 72. Divide by 4: 72 ÷ 4 = 18.

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

    27

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

12 questions · Seed 45 · Age guidance, not curriculum certification