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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 9, 11, 17 and 19.

    9 · 11 · 17 · 19 · Calculating the mean

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

    8 · 5 · 13 · 10 · Calculating the mean

  3. 3. Find the mean of 18, 21, 25 and 28.

    18 · 21 · 25 · 28 · 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 5, 5, 11 and 11.

    5 · 5 · 11 · 11 · Calculating the mean

  6. 6. Find the mean of 13, 15, 21 and 23.

    13 · 15 · 21 · 23 · Calculating the mean

  7. 7. Find the mean of 25, 27, 29 and 31.

    25 · 27 · 29 · 31 · Calculating the mean

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

    19 · 18 · 24 · 23 · Calculating the mean

  9. 9. Find the mean of 7, 10, 12 and 15.

    7 · 10 · 12 · 15 · Calculating the mean

  10. 10. Find the mean of 22, 24, 28 and 30.

    22 · 24 · 28 · 30 · Calculating the mean

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

    17 · 17 · 21 · 21 · Calculating the mean

  12. 12. Find the mean of 22, 19, 27 and 24.

    22 · 19 · 27 · 24 · Calculating the mean
12 questions · Seed 44 · 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 9, 11, 17 and 19.

    14

    Sum = 9 + 11 + 17 + 19 = 56. Divide by 4: 56 ÷ 4 = 14.

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

    9

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

  3. 3. Find the mean of 18, 21, 25 and 28.

    23

    Sum = 18 + 21 + 25 + 28 = 92. Divide by 4: 92 ÷ 4 = 23.

  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 5, 5, 11 and 11.

    8

    Sum = 5 + 5 + 11 + 11 = 32. Divide by 4: 32 ÷ 4 = 8.

  6. 6. Find the mean of 13, 15, 21 and 23.

    18

    Sum = 13 + 15 + 21 + 23 = 72. Divide by 4: 72 ÷ 4 = 18.

  7. 7. Find the mean of 25, 27, 29 and 31.

    28

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

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

    21

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

  9. 9. Find the mean of 7, 10, 12 and 15.

    11

    Sum = 7 + 10 + 12 + 15 = 44. Divide by 4: 44 ÷ 4 = 11.

  10. 10. Find the mean of 22, 24, 28 and 30.

    26

    Sum = 22 + 24 + 28 + 30 = 104. Divide by 4: 104 ÷ 4 = 26.

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

    19

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

  12. 12. Find the mean of 22, 19, 27 and 24.

    23

    Sum = 22 + 19 + 27 + 24 = 92. Divide by 4: 92 ÷ 4 = 23.

12 questions · Seed 44 · 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 9, 11, 17 and 19.

    9 · 11 · 17 · 19 · Calculating the mean

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

    8 · 5 · 13 · 10 · Calculating the mean

  3. 3. Find the mean of 18, 21, 25 and 28.

    18 · 21 · 25 · 28 · 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 5, 5, 11 and 11.

    5 · 5 · 11 · 11 · Calculating the mean

  6. 6. Find the mean of 13, 15, 21 and 23.

    13 · 15 · 21 · 23 · Calculating the mean

  7. 7. Find the mean of 25, 27, 29 and 31.

    25 · 27 · 29 · 31 · Calculating the mean

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

    19 · 18 · 24 · 23 · Calculating the mean

  9. 9. Find the mean of 7, 10, 12 and 15.

    7 · 10 · 12 · 15 · Calculating the mean

  10. 10. Find the mean of 22, 24, 28 and 30.

    22 · 24 · 28 · 30 · Calculating the mean

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

    17 · 17 · 21 · 21 · Calculating the mean

  12. 12. Find the mean of 22, 19, 27 and 24.

    22 · 19 · 27 · 24 · Calculating the mean
12 questions · Seed 44 · 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 9, 11, 17 and 19.

    14

    Sum = 9 + 11 + 17 + 19 = 56. Divide by 4: 56 ÷ 4 = 14.

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

    9

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

  3. 3. Find the mean of 18, 21, 25 and 28.

    23

    Sum = 18 + 21 + 25 + 28 = 92. Divide by 4: 92 ÷ 4 = 23.

  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 5, 5, 11 and 11.

    8

    Sum = 5 + 5 + 11 + 11 = 32. Divide by 4: 32 ÷ 4 = 8.

  6. 6. Find the mean of 13, 15, 21 and 23.

    18

    Sum = 13 + 15 + 21 + 23 = 72. Divide by 4: 72 ÷ 4 = 18.

  7. 7. Find the mean of 25, 27, 29 and 31.

    28

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

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

    21

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

  9. 9. Find the mean of 7, 10, 12 and 15.

    11

    Sum = 7 + 10 + 12 + 15 = 44. Divide by 4: 44 ÷ 4 = 11.

  10. 10. Find the mean of 22, 24, 28 and 30.

    26

    Sum = 22 + 24 + 28 + 30 = 104. Divide by 4: 104 ÷ 4 = 26.

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

    19

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

  12. 12. Find the mean of 22, 19, 27 and 24.

    23

    Sum = 22 + 19 + 27 + 24 = 92. Divide by 4: 92 ÷ 4 = 23.

12 questions · Seed 44 · Age guidance, not curriculum certification