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Cornerstone Nov 11 - 17 25 questions
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Monday 11 November 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄7 + 7⁄8

    Answer: 65⁄56
  2. 2. Algebra

    Solve: 8x - 6 = 90

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 9cm

    Answer: 12.04cm
  4. 4. Ratio

    Divide 225 in the ratio 4:2:3

    Answer: 100, 50 and 75
  5. 5. Statistics

    Find the mean of: 7, 4, 8, 20

    Answer: 9.75

Tuesday 12 November 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄7 + 2⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 5x - 11 = 19

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Divide 156 in the ratio 2:3:1

    Answer: 52, 78 and 26
  5. 5. Statistics

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

    Answer: 9

Wednesday 13 November 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 4⁄7

    Answer: 19⁄21
  2. 2. Algebra

    Solve: 6x + 6 = 48

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 8cm

    Answer: 12.04cm
  4. 4. Ratio

    Divide 240 in the ratio 1:4:3

    Answer: 30, 120 and 90
  5. 5. Statistics

    Calculate the mean of: 34, 44, 16, 36, 39, 47

    Answer: 36

Thursday 14 November 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 3⁄7

    Answer: 33⁄28
  2. 2. Algebra

    Solve: 6x + 15 = 87

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 4cm

    Answer: 9.85cm
  4. 4. Ratio

    Share 65 in the ratio 3:2

    Answer: 39 and 26
  5. 5. Statistics

    Find the mean of: 14, 12, 6, 7, 12

    Answer: 10.2

Friday 15 November 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄9 + 1⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 3x - 18 = 0

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 105 in the ratio 3:4

    Answer: 45 and 60
  5. 5. Statistics

    Calculate the mean of: 41, 7, 24, 25, 50, 46, 25

    Answer: 31.1