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Cornerstone Sep 24 - 30 25 questions
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Monday 24 September 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 2⁄4

    Answer: 1⁄1
  2. 2. Algebra

    Solve: 7x + 14 = 91

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio

    Divide 90 in the ratio 3:2:4

    Answer: 30, 20 and 40
  5. 5. Statistics

    Find the mean of: 13, 17, 11, 7, 4

    Answer: 10.4

Tuesday 25 September 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄10 + 4⁄10

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 6x - 10 = 44

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 126 in the ratio 1:3:2

    Answer: 21, 63 and 42
  5. 5. Statistics

    Calculate the mean of: 11, 47, 21, 34, 34, 8, 6, 21

    Answer: 22.8

Wednesday 26 September 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 2⁄3

    Answer: 17⁄12
  2. 2. Algebra

    Solve: 8x - 7 = 33

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio

    Divide 270 in the ratio 4:4:1

    Answer: 120, 120 and 30
  5. 5. Statistics

    Calculate the mean of: 9, 30, 12, 41, 43, 24, 38

    Answer: 28.1

Thursday 27 September 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄9 + 1⁄9

    Answer: 7⁄9
  2. 2. Algebra

    Solve: 3x + 9 = 21

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 13cm

    Answer: 17.69cm
  4. 4. Ratio

    Divide 91 in the ratio 4:1:2

    Answer: 52, 13 and 26
  5. 5. Statistics

    Find the mean of: 13, 5, 9, 2

    Answer: 7.25

Friday 28 September 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄11 + 3⁄11

    Answer: 6⁄11
  2. 2. Algebra

    Solve: 2x + 3 = 13

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Divide 120 in the ratio 2:3:1

    Answer: 40, 60 and 20
  5. 5. Statistics

    Find the mean of: 8, 4, 8, 19

    Answer: 9.75