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Cornerstone Jun 14 - 20 25 questions
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Monday 14 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄9 + 1⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 2x - 12 = 6

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 10cm

    Answer: 14.87cm
  4. 4. Ratio

    Divide 208 in the ratio 4:3:1

    Answer: 104, 78 and 26
  5. 5. Statistics

    Calculate the mean of: 34, 37, 40, 33, 9, 40

    Answer: 32.2

Tuesday 15 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 1⁄5

    Answer: 33⁄40
  2. 2. Algebra

    Solve: 4x + 9 = 21

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Divide 60 in the ratio 1:1:4

    Answer: 10, 10 and 40
  5. 5. Statistics

    Find the mean of: 20, 10, 7

    Answer: 12.333333333333

Wednesday 16 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄12 + 1⁄12

    Answer: 1⁄4
  2. 2. Algebra

    Solve: 7x + 5 = 54

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 12.08cm
  4. 4. Ratio

    Divide 108 in the ratio 3:4:2

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

    Find the mean of: 18, 4, 13

    Answer: 11.666666666667

Thursday 17 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 2⁄4

    Answer: 13⁄14
  2. 2. Algebra

    Solve: 3x - 20 = 10

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Divide 174 in the ratio 1:3:2

    Answer: 29, 87 and 58
  5. 5. Statistics

    Calculate the mean of: 44, 46, 50, 25, 11, 7

    Answer: 30.5

Friday 18 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 1⁄7

    Answer: 9⁄14
  2. 2. Algebra

    Solve: 6x - 8 = 46

    Answer: x = 9
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Divide 50 in the ratio 2:1:2

    Answer: 20, 10 and 20
  5. 5. Statistics

    Calculate the mean of: 27, 6, 22, 50, 30, 46, 47, 37

    Answer: 33.1