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Cornerstone Feb 25 - Mar 3 25 questions
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Monday 25 February 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 3⁄5

    Answer: 14⁄15
  2. 2. Algebra

    Solve: 2x + 8 = 24

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 24 in the ratio 2:1

    Answer: 16 and 8
  5. 5. Statistics

    Find the mean of: 12, 6, 14

    Answer: 10.666666666667

Tuesday 26 February 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 4⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 2x + 12 = 26

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 8cm

    Answer: 8.94cm
  4. 4. Ratio

    Share 75 in the ratio 3:2

    Answer: 45 and 30
  5. 5. Statistics

    Find the mean of: 20, 2, 14, 4

    Answer: 10

Wednesday 27 February 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 6⁄8

    Answer: 5⁄4
  2. 2. Algebra

    Solve: 8x - 15 = 97

    Answer: x = 14
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Share 140 in the ratio 4:3

    Answer: 80 and 60
  5. 5. Statistics

    Calculate the mean of: 27, 36, 18, 32, 14, 45, 34

    Answer: 29.4

Thursday 28 February 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄5 + 1⁄7

    Answer: 33⁄35
  2. 2. Algebra

    Solve: 3x - 14 = 25

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 6cm

    Answer: 7.81cm
  4. 4. Ratio

    Share 112 in the ratio 3:4

    Answer: 48 and 64
  5. 5. Statistics

    Calculate the mean of: 50, 14, 8, 35, 11, 36, 28

    Answer: 26

Friday 1 March 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 1⁄3

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 4x - 14 = 22

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 12cm

    Answer: 15.62cm
  4. 4. Ratio

    Share 72 in the ratio 2:1

    Answer: 48 and 24
  5. 5. Statistics

    Find the mean of: 11, 4, 13

    Answer: 9.3333333333333