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Cornerstone Oct 27 - Nov 2 25 questions
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Monday 27 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 1⁄3

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 7x + 8 = 85

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 136 in the ratio 1:4:3

    Answer: 17, 68 and 51
  5. 5. Statistics

    Find the mean of: 11, 9, 22

    Answer: 14

Tuesday 28 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 4⁄7

    Answer: 15⁄14
  2. 2. Algebra

    Solve: 3x + 11 = 20

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Divide 260 in the ratio 2:1:2

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

    Find the mean of: 12, 19, 20, 9

    Answer: 15

Wednesday 29 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄11 + 2⁄11

    Answer: 5⁄11
  2. 2. Algebra

    Solve: 6x - 16 = 68

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 8.06cm
  4. 4. Ratio

    Divide 130 in the ratio 3:4:3

    Answer: 39, 52 and 39
  5. 5. Statistics

    Calculate the mean of: 30, 33, 7, 6, 15, 40. Give your answer to 2 decimal places

    Answer: 21.83

Thursday 30 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄7 + 1⁄7

    Answer: 4⁄7
  2. 2. Algebra

    Solve: 3x - 9 = 12

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 84 in the ratio 4:1:2

    Answer: 48, 12 and 24
  5. 5. Statistics

    Calculate the mean of: 11, 21, 25, 42, 13, 43, 37, 25. Give your answer to 2 decimal places

    Answer: 27.13

Friday 31 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 6⁄8

    Answer: 19⁄20
  2. 2. Algebra

    Solve: 5x + 13 = 53

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio

    Divide 168 in the ratio 1:3:4

    Answer: 21, 63 and 84
  5. 5. Statistics

    Find the mean of: 9, 8, 1

    Answer: 6