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Cornerstone Dec 10 - 16 25 questions
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Monday 10 December 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄7 + 4⁄6

    Answer: 17⁄21
  2. 2. Algebra

    Solve: 3x + 5 = 32

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 12cm

    Answer: 13cm
  4. 4. Ratio

    Share 44 in the ratio 3:1

    Answer: 33 and 11
  5. 5. Statistics

    Calculate the mean of: 50, 11, 44, 34, 41, 44, 34

    Answer: 36.9

Tuesday 11 December 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄6 + 4⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 5x - 17 = 18

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio

    Share 60 in the ratio 3:1

    Answer: 45 and 15
  5. 5. Statistics

    Find the mean of: 5, 11, 19

    Answer: 11.666666666667

Wednesday 12 December 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄7 + 1⁄5

    Answer: 32⁄35
  2. 2. Algebra

    Solve: 3x - 13 = 32

    Answer: x = 15
  3. 3. Geometry

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

    Answer: 8.94cm
  4. 4. Ratio

    Share 42 in the ratio 1:2

    Answer: 14 and 28
  5. 5. Statistics

    Find the mean of: 2, 16, 11, 3

    Answer: 8

Thursday 13 December 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄10 + 1⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 7x + 8 = 78

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Share 119 in the ratio 3:4

    Answer: 51 and 68
  5. 5. Statistics

    Calculate the mean of: 26, 25, 48, 22, 14, 45, 24

    Answer: 29.1

Friday 14 December 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄9 + 4⁄9

    Answer: 7⁄9
  2. 2. Algebra

    Solve: 6x + 4 = 58

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 12cm

    Answer: 13.89cm
  4. 4. Ratio

    Divide 140 in the ratio 3:4:3

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

    Find the mean of: 6, 14, 9

    Answer: 9.6666666666667