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Cornerstone Jul 27 - Aug 2 25 questions
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Monday 27 July 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄10 + 4⁄10

    Answer: 7⁄10
  2. 2. Algebra

    Solve: 7x - 6 = 57

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 12cm

    Answer: 13.89cm
  4. 4. Ratio

    Divide 216 in the ratio 3:2:3

    Answer: 81, 54 and 81
  5. 5. Statistics

    Find the mean of: 3, 2, 20, 13, 8

    Answer: 9.2

Tuesday 28 July 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄12 + 1⁄12

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 2x - 16 = -6

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio

    Divide 125 in the ratio 3:1:1

    Answer: 75, 25 and 25
  5. 5. Statistics

    Find the mean of: 20, 11, 18, 5, 13

    Answer: 13.4

Wednesday 29 July 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄8 + 1⁄3

    Answer: 7⁄12
  2. 2. Algebra

    Solve: 5x + 5 = 55

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 10cm

    Answer: 12.21cm
  4. 4. Ratio

    Divide 60 in the ratio 1:1:2

    Answer: 15, 15 and 30
  5. 5. Statistics

    Calculate the mean of: 37, 33, 31, 18, 28, 33

    Answer: 30

Thursday 30 July 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄8 + 2⁄3

    Answer: 19⁄24
  2. 2. Algebra

    Solve: 4x + 6 = 34

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio

    Divide 40 in the ratio 1:2:1

    Answer: 10, 20 and 10
  5. 5. Statistics

    Calculate the mean of: 8, 27, 5, 24, 35, 22

    Answer: 20.2

Friday 31 July 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄9 + 7⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 3x - 14 = 31

    Answer: x = 15
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 13cm

    Answer: 13.6cm
  4. 4. Ratio

    Divide 147 in the ratio 1:4:2

    Answer: 21, 84 and 42
  5. 5. Statistics

    Find the mean of: 16, 9, 2, 14, 3

    Answer: 8.8