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Cornerstone Nov 2 - 8 25 questions
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Monday 2 November 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄7 + 3⁄5

    Answer: 51⁄35
  2. 2. Algebra

    Solve: 7x + 13 = 76

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 11cm

    Answer: 11.4cm
  4. 4. Ratio

    Divide 66 in the ratio 1:2:3

    Answer: 11, 22 and 33
  5. 5. Statistics

    Find the mean of: 20, 9, 7, 8, 10

    Answer: 10.8

Tuesday 3 November 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 6x - 8 = 40

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio

    Divide 230 in the ratio 1:2:2

    Answer: 46, 92 and 92
  5. 5. Statistics

    Calculate the mean of: 37, 11, 42, 30, 11, 31

    Answer: 27

Wednesday 4 November 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄8 + 1⁄8

    Answer: 5⁄8
  2. 2. Algebra

    Solve: 5x - 8 = 27

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio

    Share 32 in the ratio 1:3

    Answer: 8 and 24
  5. 5. Statistics

    Find the mean of: 6, 6, 8, 13, 7

    Answer: 8

Thursday 5 November 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 1⁄4

    Answer: 13⁄20
  2. 2. Algebra

    Solve: 6x + 7 = 79

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 4cm

    Answer: 8.06cm
  4. 4. Ratio

    Share 36 in the ratio 3:1

    Answer: 27 and 9
  5. 5. Statistics

    Calculate the mean of: 24, 37, 16, 21, 22, 47

    Answer: 27.8

Friday 6 November 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄10 + 1⁄10

    Answer: 3⁄10
  2. 2. Algebra

    Solve: 5x + 3 = 33

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Share 49 in the ratio 3:4

    Answer: 21 and 28
  5. 5. Statistics

    Calculate the mean of: 16, 18, 38, 37, 8, 39, 50, 36

    Answer: 30.3