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Cornerstone Jun 28 - Jul 4 25 questions
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Monday 28 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 3⁄6

    Answer: 1⁄1
  2. 2. Algebra

    Solve: 7x + 9 = 44

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Share 70 in the ratio 4:1

    Answer: 56 and 14
  5. 5. Statistics

    Find the mean of: 15, 3, 6, 16

    Answer: 10

Tuesday 29 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 1⁄5

    Answer: 2⁄5
  2. 2. Algebra

    Solve: 3x - 18 = 6

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 5cm

    Answer: 5.83cm
  4. 4. Ratio

    Share 35 in the ratio 1:4

    Answer: 7 and 28
  5. 5. Statistics

    Calculate the mean of: 14, 6, 8, 9, 14, 37, 23, 20

    Answer: 16.4

Wednesday 30 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 5x - 5 = 60

    Answer: x = 13
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics

    Calculate the mean of: 40, 23, 24, 23, 35, 42

    Answer: 31.2

Thursday 1 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 1⁄5

    Answer: 8⁄15
  2. 2. Algebra

    Solve: 5x + 3 = 38

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 10cm

    Answer: 12.81cm
  4. 4. Ratio

    Share 30 in the ratio 2:3

    Answer: 12 and 18
  5. 5. Statistics

    Calculate the mean of: 20, 14, 16, 43, 10, 27, 37, 42

    Answer: 26.1

Friday 2 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄12 + 2⁄12

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 3x + 11 = 32

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Share 27 in the ratio 2:1

    Answer: 18 and 9
  5. 5. Statistics

    Calculate the mean of: 28, 30, 28, 7, 50, 47, 34, 29

    Answer: 31.6