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Cornerstone Aug 8 - 14 25 questions
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Monday 8 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 211 + 411

    Answer: 611
  2. 2. Algebra

    Solve: 3x - 8 = 13

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 13cm

    Answer: 16.4cm
  4. 4. Ratio

    Share 50 in the ratio 4:1

    Answer: 40 and 10
  5. 5. Statistics

    Find the mean of: 17, 4, 6, 7

    Answer: 8.5

Tuesday 9 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 46 + 23

    Answer: 43
  2. 2. Algebra

    Solve: 4x + 9 = 25

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Share 40 in the ratio 3:2

    Answer: 24 and 16
  5. 5. Statistics

    Calculate the mean of: 45, 40, 38, 9, 46, 30, 7, 34

    Answer: 31.1

Wednesday 10 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 15 + 36

    Answer: 710
  2. 2. Algebra

    Solve: 5x + 11 = 56

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 12cm

    Answer: 12.37cm
  4. 4. Ratio

    Share 54 in the ratio 2:1

    Answer: 36 and 18
  5. 5. Statistics

    Calculate the mean of: 48, 16, 8, 47, 32, 50

    Answer: 33.5

Thursday 11 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 15 + 15

    Answer: 25
  2. 2. Algebra

    Solve: 2x - 17 = -1

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio

    Share 80 in the ratio 1:3

    Answer: 20 and 60
  5. 5. Statistics

    Find the mean of: 2, 6, 14, 19

    Answer: 10.25

Friday 12 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 13 + 78

    Answer: 2924
  2. 2. Algebra

    Solve: 6x - 5 = 25

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 11cm

    Answer: 13.6cm
  4. 4. Ratio

    Divide 184 in the ratio 4:1:3

    Answer: 92, 23 and 69
  5. 5. Statistics

    Find the mean of: 13, 20, 16, 3, 8

    Answer: 12