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Cornerstone Feb 4 - 10 25 questions
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Monday 4 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄12 + 2⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 2x + 7 = 15

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 9.49cm
  4. 4. Ratio

    Divide 175 in the ratio 3:3:1

    Answer: 75, 75 and 25
  5. 5. Statistics

    Calculate the mean of: 5, 37, 46, 35, 48, 30

    Answer: 33.5

Tuesday 5 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄5 + 3⁄7

    Answer: 43⁄35
  2. 2. Algebra

    Solve: 2x - 16 = 2

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 144 in the ratio 4:4:1

    Answer: 64, 64 and 16
  5. 5. Statistics

    Find the mean of: 13, 12, 17, 18

    Answer: 15

Wednesday 6 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄11 + 1⁄11

    Answer: 7⁄11
  2. 2. Algebra

    Solve: 7x - 5 = 37

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 12.65cm
  4. 4. Ratio

    Divide 168 in the ratio 3:1:3

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

    Find the mean of: 14, 6, 7

    Answer: 9

Thursday 7 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄8 + 3⁄7

    Answer: 31⁄56
  2. 2. Algebra

    Solve: 5x + 7 = 42

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Divide 168 in the ratio 1:2:3

    Answer: 28, 56 and 84
  5. 5. Statistics

    Calculate the mean of: 7, 25, 50, 6, 17, 16. Give your answer to 2 decimal places

    Answer: 20.17

Friday 8 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄6 + 1⁄3

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 5x + 6 = 41

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 96 in the ratio 3:4:1

    Answer: 36, 48 and 12
  5. 5. Statistics

    Calculate the mean of: 9, 24, 46, 27, 46, 18, 8. Give your answer to 2 decimal places

    Answer: 25.43