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Cornerstone Oct 22 - 28 25 questions
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Monday 22 October 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 2⁄5

    Answer: 11⁄15
  2. 2. Algebra

    Solve: 3x - 14 = 1

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 200 in the ratio 4:3:1

    Answer: 100, 75 and 25
  5. 5. Statistics

    Calculate the mean of: 45, 32, 11, 36, 25, 45, 18

    Answer: 30.3

Tuesday 23 October 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄12 + 2⁄12

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 6x + 13 = 85

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 15cm

    Answer: 17.49cm
  4. 4. Ratio

    Divide 88 in the ratio 1:4:3

    Answer: 11, 44 and 33
  5. 5. Statistics

    Find the mean of: 8, 19, 20, 15

    Answer: 15.5

Wednesday 24 October 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 3x + 8 = 29

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 10cm

    Answer: 10.77cm
  4. 4. Ratio

    Share 77 in the ratio 3:4

    Answer: 33 and 44
  5. 5. Statistics

    Calculate the mean of: 25, 12, 39, 21, 16, 10, 47

    Answer: 24.3

Thursday 25 October 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄7 + 2⁄3

    Answer: 32⁄21
  2. 2. Algebra

    Solve: 3x - 16 = -4

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Share 102 in the ratio 2:1

    Answer: 68 and 34
  5. 5. Statistics

    Find the mean of: 16, 3, 6, 16, 10

    Answer: 10.2

Friday 26 October 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄10 + 1⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 4x - 17 = 39

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 14cm

    Answer: 17.8cm
  4. 4. Ratio

    Share 96 in the ratio 2:1

    Answer: 64 and 32
  5. 5. Statistics

    Find the mean of: 2, 5, 5, 10, 19

    Answer: 8.2