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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 13, 12, 20 and 19.

    13 · 12 · 20 · 19 · Calculating the mean

  2. 2. Find the mean of 21, 21, 27 and 27.

    21 · 21 · 27 · 27 · Calculating the mean

  3. 3. Find the mean of 24, 25, 33 and 34.

    24 · 25 · 33 · 34 · Calculating the mean

  4. 4. Find the mean of 15, 17, 21 and 23.

    15 · 17 · 21 · 23 · Calculating the mean

  5. 5. Find the mean of 10, 11, 13 and 14.

    10 · 11 · 13 · 14 · Calculating the mean

  6. 6. Find the mean of 16, 18, 24 and 26.

    16 · 18 · 24 · 26 · Calculating the mean

  7. 7. Find the mean of 4, 7, 9 and 12.

    4 · 7 · 9 · 12 · Calculating the mean

  8. 8. Find the mean of 16, 14, 22 and 20.

    16 · 14 · 22 · 20 · Calculating the mean

  9. 9. Find the mean of 14, 18, 20 and 24.

    14 · 18 · 20 · 24 · Calculating the mean

  10. 10. Find the mean of 6, 6, 12 and 12.

    6 · 6 · 12 · 12 · Calculating the mean

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

    16 · 15 · 21 · 20 · Calculating the mean

  12. 12. Find the mean of 5, 4, 8 and 7.

    5 · 4 · 8 · 7 · Calculating the mean
12 questions · Seed 104730 · 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 13, 12, 20 and 19.

    16

    Sum = 13 + 12 + 20 + 19 = 64. Divide by 4: 64 ÷ 4 = 16.

  2. 2. Find the mean of 21, 21, 27 and 27.

    24

    Sum = 21 + 21 + 27 + 27 = 96. Divide by 4: 96 ÷ 4 = 24.

  3. 3. Find the mean of 24, 25, 33 and 34.

    29

    Sum = 24 + 25 + 33 + 34 = 116. Divide by 4: 116 ÷ 4 = 29.

  4. 4. Find the mean of 15, 17, 21 and 23.

    19

    Sum = 15 + 17 + 21 + 23 = 76. Divide by 4: 76 ÷ 4 = 19.

  5. 5. Find the mean of 10, 11, 13 and 14.

    12

    Sum = 10 + 11 + 13 + 14 = 48. Divide by 4: 48 ÷ 4 = 12.

  6. 6. Find the mean of 16, 18, 24 and 26.

    21

    Sum = 16 + 18 + 24 + 26 = 84. Divide by 4: 84 ÷ 4 = 21.

  7. 7. Find the mean of 4, 7, 9 and 12.

    8

    Sum = 4 + 7 + 9 + 12 = 32. Divide by 4: 32 ÷ 4 = 8.

  8. 8. Find the mean of 16, 14, 22 and 20.

    18

    Sum = 16 + 14 + 22 + 20 = 72. Divide by 4: 72 ÷ 4 = 18.

  9. 9. Find the mean of 14, 18, 20 and 24.

    19

    Sum = 14 + 18 + 20 + 24 = 76. Divide by 4: 76 ÷ 4 = 19.

  10. 10. Find the mean of 6, 6, 12 and 12.

    9

    Sum = 6 + 6 + 12 + 12 = 36. Divide by 4: 36 ÷ 4 = 9.

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

    18

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

  12. 12. Find the mean of 5, 4, 8 and 7.

    6

    Sum = 5 + 4 + 8 + 7 = 24. Divide by 4: 24 ÷ 4 = 6.

12 questions · Seed 104730 · 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 13, 12, 20 and 19.

    13 · 12 · 20 · 19 · Calculating the mean

  2. 2. Find the mean of 21, 21, 27 and 27.

    21 · 21 · 27 · 27 · Calculating the mean

  3. 3. Find the mean of 24, 25, 33 and 34.

    24 · 25 · 33 · 34 · Calculating the mean

  4. 4. Find the mean of 15, 17, 21 and 23.

    15 · 17 · 21 · 23 · Calculating the mean

  5. 5. Find the mean of 10, 11, 13 and 14.

    10 · 11 · 13 · 14 · Calculating the mean

  6. 6. Find the mean of 16, 18, 24 and 26.

    16 · 18 · 24 · 26 · Calculating the mean

  7. 7. Find the mean of 4, 7, 9 and 12.

    4 · 7 · 9 · 12 · Calculating the mean

  8. 8. Find the mean of 16, 14, 22 and 20.

    16 · 14 · 22 · 20 · Calculating the mean

  9. 9. Find the mean of 14, 18, 20 and 24.

    14 · 18 · 20 · 24 · Calculating the mean

  10. 10. Find the mean of 6, 6, 12 and 12.

    6 · 6 · 12 · 12 · Calculating the mean

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

    16 · 15 · 21 · 20 · Calculating the mean

  12. 12. Find the mean of 5, 4, 8 and 7.

    5 · 4 · 8 · 7 · Calculating the mean
12 questions · Seed 104730 · 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 13, 12, 20 and 19.

    16

    Sum = 13 + 12 + 20 + 19 = 64. Divide by 4: 64 ÷ 4 = 16.

  2. 2. Find the mean of 21, 21, 27 and 27.

    24

    Sum = 21 + 21 + 27 + 27 = 96. Divide by 4: 96 ÷ 4 = 24.

  3. 3. Find the mean of 24, 25, 33 and 34.

    29

    Sum = 24 + 25 + 33 + 34 = 116. Divide by 4: 116 ÷ 4 = 29.

  4. 4. Find the mean of 15, 17, 21 and 23.

    19

    Sum = 15 + 17 + 21 + 23 = 76. Divide by 4: 76 ÷ 4 = 19.

  5. 5. Find the mean of 10, 11, 13 and 14.

    12

    Sum = 10 + 11 + 13 + 14 = 48. Divide by 4: 48 ÷ 4 = 12.

  6. 6. Find the mean of 16, 18, 24 and 26.

    21

    Sum = 16 + 18 + 24 + 26 = 84. Divide by 4: 84 ÷ 4 = 21.

  7. 7. Find the mean of 4, 7, 9 and 12.

    8

    Sum = 4 + 7 + 9 + 12 = 32. Divide by 4: 32 ÷ 4 = 8.

  8. 8. Find the mean of 16, 14, 22 and 20.

    18

    Sum = 16 + 14 + 22 + 20 = 72. Divide by 4: 72 ÷ 4 = 18.

  9. 9. Find the mean of 14, 18, 20 and 24.

    19

    Sum = 14 + 18 + 20 + 24 = 76. Divide by 4: 76 ÷ 4 = 19.

  10. 10. Find the mean of 6, 6, 12 and 12.

    9

    Sum = 6 + 6 + 12 + 12 = 36. Divide by 4: 36 ÷ 4 = 9.

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

    18

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

  12. 12. Find the mean of 5, 4, 8 and 7.

    6

    Sum = 5 + 4 + 8 + 7 = 24. Divide by 4: 24 ÷ 4 = 6.

12 questions · Seed 104730 · Age guidance, not curriculum certification