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Cornerstone Apr 8 - 14 25 questions
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Monday 8 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 4⁄8

    Answer: 15⁄14
  2. 2. Algebra

    Solve: 7x - 9 = 82

    Answer: x = 13
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Divide 160 in the ratio 1:2:1

    Answer: 40, 80 and 40
  5. 5. Statistics

    Calculate the mean of: 25, 14, 38, 24, 11, 19, 34

    Answer: 23.6

Tuesday 9 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄10 + 1⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 6x + 13 = 43

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 9cm

    Answer: 10.3cm
  4. 4. Ratio

    Divide 230 in the ratio 2:1:2

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

    Find the mean of: 12, 17, 9, 8, 5

    Answer: 10.2

Wednesday 10 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄7 + 2⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 2x + 10 = 22

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Divide 180 in the ratio 2:4:3

    Answer: 40, 80 and 60
  5. 5. Statistics

    Find the mean of: 17, 18, 8, 2

    Answer: 11.25

Thursday 11 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 2⁄8

    Answer: 9⁄20
  2. 2. Algebra

    Solve: 4x - 11 = 33

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 7cm

    Answer: 10.63cm
  4. 4. Ratio

    Divide 208 in the ratio 3:2:3

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

    Calculate the mean of: 11, 33, 11, 27, 32, 47, 26

    Answer: 26.7

Friday 12 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄9 + 2⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 8x - 12 = 108

    Answer: x = 15
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio

    Divide 100 in the ratio 2:1:2

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

    Calculate the mean of: 13, 35, 40, 9, 18, 23

    Answer: 23