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Cornerstone Oct 8 - 14 25 questions
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Monday 8 October 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄7 + 1⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 4x + 8 = 40

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio

    Share 112 in the ratio 4:3

    Answer: 64 and 48
  5. 5. Statistics

    Find the mean of: 4, 7, 12, 16, 14

    Answer: 10.6

Tuesday 9 October 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 6⁄7

    Answer: 25⁄21
  2. 2. Algebra

    Solve: 6x - 9 = 33

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 10cm

    Answer: 11.66cm
  4. 4. Ratio

    Share 27 in the ratio 1:2

    Answer: 9 and 18
  5. 5. Statistics

    Calculate the mean of: 7, 46, 49, 43, 5, 20, 27, 15

    Answer: 26.5

Wednesday 10 October 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 4⁄7

    Answer: 23⁄28
  2. 2. Algebra

    Solve: 4x - 6 = 54

    Answer: x = 15
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 56 in the ratio 4:3

    Answer: 32 and 24
  5. 5. Statistics

    Calculate the mean of: 12, 34, 49, 37, 40, 25, 22

    Answer: 31.3

Thursday 11 October 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄9 + 1⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 7x + 12 = 61

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 8.06cm
  4. 4. Ratio

    Share 25 in the ratio 4:1

    Answer: 20 and 5
  5. 5. Statistics

    Find the mean of: 15, 19, 11, 14

    Answer: 14.75

Friday 12 October 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 7⁄8

    Answer: 11⁄8
  2. 2. Algebra

    Solve: 5x + 6 = 56

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 60 in the ratio 4:1

    Answer: 48 and 12
  5. 5. Statistics

    Find the mean of: 7, 10, 10, 6

    Answer: 8.25