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Cornerstone Apr 11 - 17 25 questions
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Monday 11 April 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄5 + 5⁄8

    Answer: 49⁄40
  2. 2. Algebra

    Solve: 7x - 16 = 61

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio

    Divide 270 in the ratio 3:4:2

    Answer: 90, 120 and 60
  5. 5. Statistics

    Find the mean of: 9, 9, 19, 7

    Answer: 11

Tuesday 12 April 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄12 + 1⁄12

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 8x - 13 = 51

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 140 in the ratio 2:4:1

    Answer: 40, 80 and 20
  5. 5. Statistics

    Find the mean of: 13, 18, 8, 15

    Answer: 13.5

Wednesday 13 April 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄7 + 1⁄8

    Answer: 15⁄56
  2. 2. Algebra

    Solve: 2x + 14 = 20

    Answer: x = 3
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 9cm

    Answer: 9.85cm
  4. 4. Ratio

    Divide 90 in the ratio 1:3:2

    Answer: 15, 45 and 30
  5. 5. Statistics

    Calculate the mean of: 40, 37, 26, 25, 12, 24

    Answer: 27.3

Thursday 14 April 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄6 + 4⁄8

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 4x + 7 = 47

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 9cm

    Answer: 14.21cm
  4. 4. Ratio

    Share 80 in the ratio 2:3

    Answer: 32 and 48
  5. 5. Statistics

    Find the mean of: 6, 9, 14, 8, 6

    Answer: 8.6

Friday 15 April 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 8x - 6 = 106

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Share 55 in the ratio 1:4

    Answer: 11 and 44
  5. 5. Statistics

    Calculate the mean of: 41, 45, 38, 19, 33, 25, 32

    Answer: 33.3