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Cornerstone Mar 11 - 17 25 questions
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Monday 11 March 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄11 + 7⁄11

    Answer: 9⁄11
  2. 2. Algebra

    Solve: 7x + 9 = 86

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 15cm

    Answer: 15.3cm
  4. 4. Ratio

    Divide 120 in the ratio 2:3:1

    Answer: 40, 60 and 20
  5. 5. Statistics

    Find the mean of: 16, 13, 17, 18

    Answer: 16

Tuesday 12 March 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄6 + 6⁄8

    Answer: 17⁄12
  2. 2. Algebra

    Solve: 7x + 14 = 42

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 112 in the ratio 2:3:2

    Answer: 32, 48 and 32
  5. 5. Statistics

    Find the mean of: 11, 14, 16, 13

    Answer: 13.5

Wednesday 13 March 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄8 + 1⁄8

    Answer: 5⁄8
  2. 2. Algebra

    Solve: 8x - 12 = 92

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 11cm

    Answer: 11.7cm
  4. 4. Ratio

    Divide 162 in the ratio 3:1:2

    Answer: 81, 27 and 54
  5. 5. Statistics

    Calculate the mean of: 15, 24, 10, 42, 39, 15, 14

    Answer: 22.7

Thursday 14 March 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 4⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 8x - 11 = 85

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 80 in the ratio 4:1

    Answer: 64 and 16
  5. 5. Statistics

    Find the mean of: 6, 11, 5, 14, 19

    Answer: 11

Friday 15 March 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 4⁄7

    Answer: 15⁄14
  2. 2. Algebra

    Solve: 7x + 13 = 62

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio

    Share 140 in the ratio 4:3

    Answer: 80 and 60
  5. 5. Statistics

    Calculate the mean of: 50, 44, 24, 8, 42, 20, 38, 50

    Answer: 34.5