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Cornerstone Dec 6 - 12 25 questions
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Monday 6 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄6 + 5⁄8

    Answer: 23⁄24
  2. 2. Algebra

    Solve: 6x + 8 = 56

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 13cm

    Answer: 17.69cm
  4. 4. Ratio

    Divide 144 in the ratio 3:2:1

    Answer: 72, 48 and 24
  5. 5. Statistics

    Calculate the mean of: 20, 48, 43, 42, 9, 7

    Answer: 28.2

Tuesday 7 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 4x - 6 = 46

    Answer: x = 13
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 196 in the ratio 3:1:3

    Answer: 84, 28 and 84
  5. 5. Statistics

    Find the mean of: 16, 4, 10

    Answer: 10

Wednesday 8 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄11 + 1⁄11

    Answer: 9⁄11
  2. 2. Algebra

    Solve: 5x - 6 = 34

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 6cm

    Answer: 7.21cm
  4. 4. Ratio

    Divide 50 in the ratio 3:1:1

    Answer: 30, 10 and 10
  5. 5. Statistics

    Find the mean of: 9, 7, 8, 10, 9

    Answer: 8.6

Thursday 9 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄7 + 4⁄6

    Answer: 32⁄21
  2. 2. Algebra

    Solve: 4x + 14 = 34

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 9cm

    Answer: 9.49cm
  4. 4. Ratio

    Divide 162 in the ratio 4:3:2

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

    Calculate the mean of: 29, 11, 47, 18, 22, 7, 12

    Answer: 20.9

Friday 10 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄8 + 1⁄3

    Answer: 7⁄12
  2. 2. Algebra

    Solve: 4x + 12 = 44

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Divide 100 in the ratio 4:3:3

    Answer: 40, 30 and 30
  5. 5. Statistics

    Calculate the mean of: 17, 32, 15, 23, 14, 23, 33

    Answer: 22.4