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Cornerstone Jun 10 - 16 25 questions
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Monday 10 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄10 + 1⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 2x - 18 = 4

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 7cm

    Answer: 8.6cm
  4. 4. Ratio

    Divide 319 in the ratio 4:3:4

    Answer: 116, 87 and 116
  5. 5. Statistics

    Find the mean of: 18, 8, 9, 16

    Answer: 12.75

Tuesday 11 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄6 + 1⁄7

    Answer: 17⁄21
  2. 2. Algebra

    Solve: 5x + 14 = 29

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 240 in the ratio 1:2:2

    Answer: 48, 96 and 96
  5. 5. Statistics

    Calculate the mean of: 34, 32, 36, 48, 28, 47

    Answer: 37.5

Wednesday 12 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 4x + 4 = 44

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 14cm

    Answer: 15.23cm
  4. 4. Ratio

    Divide 110 in the ratio 3:3:4

    Answer: 33, 33 and 44
  5. 5. Statistics

    Calculate the mean of: 36, 32, 42, 24, 45, 16, 33

    Answer: 32.6

Thursday 13 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 1⁄4

    Answer: 9⁄20
  2. 2. Algebra

    Solve: 7x - 12 = 58

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio

    Divide 105 in the ratio 1:3:3

    Answer: 15, 45 and 45
  5. 5. Statistics

    Find the mean of: 13, 15, 12, 5

    Answer: 11.25

Friday 14 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄6 + 4⁄8

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 2x - 8 = 12

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Share 44 in the ratio 3:1

    Answer: 33 and 11
  5. 5. Statistics

    Calculate the mean of: 7, 30, 49, 14, 14, 27

    Answer: 23.5