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Cornerstone Aug 2 - 8 25 questions
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Monday 2 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄6 + 2⁄3

    Answer: 1⁄1
  2. 2. Algebra

    Solve: 5x + 14 = 39

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 45 in the ratio 2:3

    Answer: 18 and 27
  5. 5. Statistics

    Calculate the mean of: 17, 13, 16, 28, 18, 13

    Answer: 17.5

Tuesday 3 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄8 + 6⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 5x - 17 = 38

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 13cm

    Answer: 13.34cm
  4. 4. Ratio

    Share 35 in the ratio 3:4

    Answer: 15 and 20
  5. 5. Statistics

    Find the mean of: 11, 9, 15, 3, 10

    Answer: 9.6

Wednesday 4 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄12 + 1⁄12

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 4x - 13 = 11

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 11cm

    Answer: 12.08cm
  4. 4. Ratio

    Divide 260 in the ratio 1:2:2

    Answer: 52, 104 and 104
  5. 5. Statistics

    Calculate the mean of: 37, 46, 22, 30, 21, 8

    Answer: 27.3

Thursday 5 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 2⁄7

    Answer: 20⁄21
  2. 2. Algebra

    Solve: 3x + 12 = 48

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Divide 102 in the ratio 2:1:3

    Answer: 34, 17 and 51
  5. 5. Statistics

    Find the mean of: 14, 8, 5

    Answer: 9

Friday 6 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄6 + 2⁄6

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 7x + 5 = 89

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 13cm

    Answer: 13.6cm
  4. 4. Ratio

    Divide 126 in the ratio 2:3:4

    Answer: 28, 42 and 56
  5. 5. Statistics

    Find the mean of: 7, 7, 6

    Answer: 6.6666666666667