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Cornerstone Aug 12 - 18 25 questions
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Monday 12 August 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 1⁄3

    Answer: 8⁄15
  2. 2. Algebra

    Solve: 4x - 10 = 14

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 16.97cm
  4. 4. Ratio

    Share 80 in the ratio 1:4

    Answer: 16 and 64
  5. 5. Statistics

    Calculate the mean of: 16, 39, 34, 36, 35, 16

    Answer: 29.3

Tuesday 13 August 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄10 + 6⁄10

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 4x + 6 = 26

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 51 in the ratio 2:1

    Answer: 34 and 17
  5. 5. Statistics

    Find the mean of: 15, 20, 8

    Answer: 14.333333333333

Wednesday 14 August 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄7 + 1⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 3x + 5 = 38

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Divide 203 in the ratio 3:1:3

    Answer: 87, 29 and 87
  5. 5. Statistics

    Calculate the mean of: 30, 45, 43, 49, 19, 33

    Answer: 36.5

Thursday 15 August 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 2⁄7

    Answer: 47⁄42
  2. 2. Algebra

    Solve: 3x - 20 = -2

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 12cm

    Answer: 13cm
  4. 4. Ratio

    Divide 52 in the ratio 1:2:1

    Answer: 13, 26 and 13
  5. 5. Statistics

    Find the mean of: 7, 18, 17

    Answer: 14

Friday 16 August 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄6 + 3⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 2x - 11 = 19

    Answer: x = 15
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Divide 140 in the ratio 1:3:3

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

    Find the mean of: 8, 8, 16, 2, 20

    Answer: 10.8