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Cornerstone Dec 30 - Jan 5 25 questions
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Monday 30 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄10 + 4⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 7x - 16 = 54

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 7.62cm
  4. 4. Ratio

    Divide 110 in the ratio 1:2:2

    Answer: 22, 44 and 44
  5. 5. Statistics

    Calculate the mean of: 30, 13, 14, 40, 29, 35, 44, 30. Give your answer to 2 decimal places

    Answer: 29.38

Tuesday 31 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 4⁄6

    Answer: 17⁄12
  2. 2. Algebra

    Solve: 2x + 11 = 25

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Divide 208 in the ratio 3:3:2

    Answer: 78, 78 and 52
  5. 5. Statistics

    Find the mean of: 5, 11, 6, 12, 6

    Answer: 8

Wednesday 1 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄8 + 2⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 3x + 9 = 18

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 225 in the ratio 4:2:3

    Answer: 100, 50 and 75
  5. 5. Statistics

    Calculate the mean of: 14, 48, 12, 49, 42, 38, 38, 26. Give your answer to 2 decimal places

    Answer: 33.38

Thursday 2 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄8 + 1⁄3

    Answer: 13⁄12
  2. 2. Algebra

    Solve: 5x + 4 = 44

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 12.81cm
  4. 4. Ratio

    Divide 180 in the ratio 4:3:3

    Answer: 72, 54 and 54
  5. 5. Statistics

    Calculate the mean of: 36, 16, 8, 35, 31, 10, 5, 39

    Answer: 22.5

Friday 3 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄11 + 3⁄11

    Answer: 6⁄11
  2. 2. Algebra

    Solve: 7x - 17 = 25

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio

    Divide 132 in the ratio 1:2:3

    Answer: 22, 44 and 66
  5. 5. Statistics

    Find the mean of: 10, 17, 17, 12

    Answer: 14