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Cornerstone Feb 10 - 16 25 questions
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Monday 10 February 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄10 + 7⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 2x + 3 = 15

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 297 in the ratio 3:4:4

    Answer: 81, 108 and 108
  5. 5. Statistics

    Find the mean of: 20, 14, 3, 19

    Answer: 14

Tuesday 11 February 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 3⁄5

    Answer: 19⁄15
  2. 2. Algebra

    Solve: 8x - 16 = 88

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 14.76cm
  4. 4. Ratio

    Divide 88 in the ratio 1:2:1

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

    Calculate the mean of: 36, 20, 17, 34, 43, 33, 26. Give your answer to 2 decimal places

    Answer: 29.86

Wednesday 12 February 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄8 + 1⁄8

    Answer: 1⁄4
  2. 2. Algebra

    Solve: 7x - 16 = 12

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Divide 264 in the ratio 4:4:3

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

    Calculate the mean of: 28, 39, 14, 33, 36, 34, 28, 15. Give your answer to 2 decimal places

    Answer: 28.38

Thursday 13 February 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 1⁄5

    Answer: 33⁄40
  2. 2. Algebra

    Solve: 3x + 7 = 37

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 18.44cm
  4. 4. Ratio

    Divide 162 in the ratio 3:1:2

    Answer: 81, 27 and 54
  5. 5. Statistics

    Find the mean of: 20, 7, 18, 3

    Answer: 12

Friday 14 February 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 1⁄8

    Answer: 13⁄40
  2. 2. Algebra

    Solve: 4x + 4 = 28

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 12.21cm
  4. 4. Ratio

    Share 48 in the ratio 1:2

    Answer: 16 and 32
  5. 5. Statistics

    Calculate the mean of: 30, 45, 5, 17, 37, 24, 14, 7. Give your answer to 2 decimal places

    Answer: 22.38