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Cornerstone Dec 29 - Jan 4 25 questions
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Monday 29 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄11 + 2⁄11

    Answer: 7⁄11
  2. 2. Algebra

    Solve: 5x + 13 = 58

    Answer: x = 9
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio

    Divide 119 in the ratio 1:4:2

    Answer: 17, 68 and 34
  5. 5. Statistics

    Calculate the mean of: 28, 33, 45, 10, 35, 35

    Answer: 31

Tuesday 30 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 1⁄7

    Answer: 3⁄7
  2. 2. Algebra

    Solve: 3x + 14 = 44

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 7.07cm
  4. 4. Ratio

    Divide 330 in the ratio 4:4:3

    Answer: 120, 120 and 90
  5. 5. Statistics

    Calculate the mean of: 28, 9, 44, 24, 15, 28, 25, 22. Give your answer to 2 decimal places

    Answer: 24.38

Wednesday 31 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 3⁄5

    Answer: 27⁄20
  2. 2. Algebra

    Solve: 4x - 7 = 41

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Divide 85 in the ratio 2:2:1

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

    Find the mean of: 20, 10, 4, 6

    Answer: 10

Thursday 1 January 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 1⁄5

    Answer: 27⁄35
  2. 2. Algebra

    Solve: 6x + 5 = 77

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 100 in the ratio 2:2:1

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

    Calculate the mean of: 47, 27, 11, 9, 24, 25, 42, 34. Give your answer to 2 decimal places

    Answer: 27.38

Friday 2 January 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄8 + 4⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 3x + 6 = 24

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.04cm
  4. 4. Ratio

    Divide 108 in the ratio 2:1:1

    Answer: 54, 27 and 27
  5. 5. Statistics

    Calculate the mean of: 7, 20, 39, 49, 39, 13, 9. Give your answer to 2 decimal places

    Answer: 25.14