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Cornerstone Nov 27 - Dec 3 25 questions
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Monday 27 November 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 2x - 15 = 1

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio

    Divide 85 in the ratio 2:2:1

    Answer: 34, 34 and 17
  5. 5. Statistics

    Calculate the mean of: 37, 25, 34, 6, 39, 18

    Answer: 26.5

Tuesday 28 November 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄11 + 1⁄11

    Answer: 9⁄11
  2. 2. Algebra

    Solve: 6x - 11 = 31

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 17.2cm
  4. 4. Ratio

    Divide 66 in the ratio 2:1:3

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

    Calculate the mean of: 6, 22, 30, 14, 37, 13, 13, 9

    Answer: 18

Wednesday 29 November 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 4⁄5

    Answer: 31⁄20
  2. 2. Algebra

    Solve: 5x + 15 = 55

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Divide 192 in the ratio 3:4:1

    Answer: 72, 96 and 24
  5. 5. Statistics

    Find the mean of: 3, 25, 11, 17

    Answer: 14

Thursday 30 November 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 4⁄8

    Answer: 15⁄14
  2. 2. Algebra

    Solve: 5x + 9 = 49

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 200 in the ratio 1:2:2

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

    Find the mean of: 16, 10, 10

    Answer: 12

Friday 1 December 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄12 + 9⁄12

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 2x + 7 = 21

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 11.7cm
  4. 4. Ratio

    Divide 260 in the ratio 2:1:2

    Answer: 104, 52 and 104
  5. 5. Statistics

    Find the mean of: 14, 6, 3, 21

    Answer: 11