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Cornerstone Sep 30 - Oct 6 25 questions
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Monday 30 September 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄9 + 3⁄9

    Answer: 7⁄9
  2. 2. Algebra

    Solve: 5x - 20 = 35

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 4cm

    Answer: 11.7cm
  4. 4. Ratio

    Divide 192 in the ratio 3:2:3

    Answer: 72, 48 and 72
  5. 5. Statistics

    Calculate the mean of: 45, 20, 22, 7, 26, 47

    Answer: 27.8

Tuesday 1 October 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄7 + 3⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 3x - 13 = 11

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 9cm

    Answer: 15cm
  4. 4. Ratio

    Divide 66 in the ratio 3:2:1

    Answer: 33, 22 and 11
  5. 5. Statistics

    Find the mean of: 15, 14, 5, 13, 18

    Answer: 13

Wednesday 2 October 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 3⁄4

    Answer: 13⁄12
  2. 2. Algebra

    Solve: 6x - 13 = 47

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Divide 200 in the ratio 4:3:1

    Answer: 100, 75 and 25
  5. 5. Statistics

    Find the mean of: 5, 12, 16, 17

    Answer: 12.5

Thursday 3 October 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 3x + 11 = 29

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 16.97cm
  4. 4. Ratio

    Divide 91 in the ratio 2:1:4

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

    Calculate the mean of: 36, 30, 40, 28, 37, 29

    Answer: 33.3

Friday 4 October 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄10 + 4⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 4x + 14 = 38

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Share 36 in the ratio 1:2

    Answer: 12 and 24
  5. 5. Statistics

    Find the mean of: 10, 16, 14, 13, 4

    Answer: 11.4