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Cornerstone Dec 16 - 22 25 questions
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Monday 16 December 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 2⁄3

    Answer: 3⁄2
  2. 2. Algebra

    Solve: 2x - 7 = 9

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio

    Divide 270 in the ratio 2:1:2

    Answer: 108, 54 and 108
  5. 5. Statistics

    Calculate the mean of: 29, 14, 35, 31, 46, 47, 44

    Answer: 35.1

Tuesday 17 December 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄7 + 3⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 6x + 5 = 41

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 14cm

    Answer: 17.2cm
  4. 4. Ratio

    Divide 108 in the ratio 2:3:4

    Answer: 24, 36 and 48
  5. 5. Statistics

    Find the mean of: 8, 17, 10

    Answer: 11.666666666667

Wednesday 18 December 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄7 + 2⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 3x + 5 = 35

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 6cm

    Answer: 6.71cm
  4. 4. Ratio

    Divide 156 in the ratio 3:2:1

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

    Find the mean of: 18, 8, 15, 12

    Answer: 13.25

Thursday 19 December 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 1⁄7

    Answer: 17⁄21
  2. 2. Algebra

    Solve: 5x - 18 = 27

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Divide 216 in the ratio 2:3:4

    Answer: 48, 72 and 96
  5. 5. Statistics

    Calculate the mean of: 8, 18, 29, 45, 15, 48, 16, 42

    Answer: 27.6

Friday 20 December 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄11 + 3⁄11

    Answer: 8⁄11
  2. 2. Algebra

    Solve: 5x - 18 = 52

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 15cm

    Answer: 15.81cm
  4. 4. Ratio

    Divide 162 in the ratio 3:4:2

    Answer: 54, 72 and 36
  5. 5. Statistics

    Find the mean of: 19, 11, 20, 12, 3

    Answer: 13