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Cornerstone Aug 15 - 21 25 questions
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Monday 15 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 3⁄8

    Answer: 25⁄24
  2. 2. Algebra

    Solve: 7x - 8 = 90

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 5cm

    Answer: 5.83cm
  4. 4. Ratio

    Divide 120 in the ratio 1:3:2

    Answer: 20, 60 and 40
  5. 5. Statistics

    Calculate the mean of: 18, 17, 48, 14, 47, 7, 31

    Answer: 26

Tuesday 16 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 8x - 16 = 48

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Divide 253 in the ratio 4:4:3

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

    Calculate the mean of: 25, 20, 22, 18, 9, 8, 44

    Answer: 20.9

Wednesday 17 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄7 + 1⁄4

    Answer: 27⁄28
  2. 2. Algebra

    Solve: 2x + 3 = 9

    Answer: x = 3
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 11cm

    Answer: 12.08cm
  4. 4. Ratio

    Divide 184 in the ratio 3:2:3

    Answer: 69, 46 and 69
  5. 5. Statistics

    Find the mean of: 10, 17, 7, 15

    Answer: 12.25

Thursday 18 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 2⁄5

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 2x + 8 = 32

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 6cm

    Answer: 7.21cm
  4. 4. Ratio

    Divide 84 in the ratio 2:1:1

    Answer: 42, 21 and 21
  5. 5. Statistics

    Find the mean of: 15, 8, 5, 9

    Answer: 9.25

Friday 19 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄12 + 3⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 4x - 6 = 46

    Answer: x = 13
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Divide 198 in the ratio 4:3:4

    Answer: 72, 54 and 72
  5. 5. Statistics

    Calculate the mean of: 37, 15, 47, 35, 34, 38, 31

    Answer: 33.9