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Cornerstone May 5 - 11 25 questions
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Monday 5 May 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 24 + 13

    Answer: 56
  2. 2. Algebra

    Solve: 2x + 10 = 26

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio

    Share 55 in the ratio 2:3

    Answer: 22 and 33
  5. 5. Statistics

    Calculate the mean of: 34, 40, 41, 10, 20, 26, 32

    Answer: 29

Tuesday 6 May 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 211 + 211

    Answer: 411
  2. 2. Algebra

    Solve: 6x + 15 = 39

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 9cm

    Answer: 9.85cm
  4. 4. Ratio

    Share 36 in the ratio 1:2

    Answer: 12 and 24
  5. 5. Statistics

    Calculate the mean of: 37, 28, 31, 34, 48, 12

    Answer: 31.7

Wednesday 7 May 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 78 + 27

    Answer: 6556
  2. 2. Algebra

    Solve: 5x - 11 = 34

    Answer: x = 9
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Share 30 in the ratio 1:2

    Answer: 10 and 20
  5. 5. Statistics

    Find the mean of: 10, 11, 11

    Answer: 10.666666666667

Thursday 8 May 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 35 + 28

    Answer: 1720
  2. 2. Algebra

    Solve: 8x - 17 = 23

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Share 100 in the ratio 1:4

    Answer: 20 and 80
  5. 5. Statistics

    Find the mean of: 12, 2, 15, 8

    Answer: 9.25

Friday 9 May 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 811 + 111

    Answer: 911
  2. 2. Algebra

    Solve: 5x + 6 = 51

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 13cm

    Answer: 14.76cm
  4. 4. Ratio

    Share 45 in the ratio 1:4

    Answer: 9 and 36
  5. 5. Statistics

    Calculate the mean of: 35, 45, 13, 39, 14, 44, 21, 29

    Answer: 30