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Cornerstone Feb 20 - 26 25 questions
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Monday 20 February 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 2⁄6

    Answer: 13⁄12
  2. 2. Algebra

    Solve: 5x + 6 = 21

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 52 in the ratio 3:1

    Answer: 39 and 13
  5. 5. Statistics

    Calculate the mean of: 36, 29, 21, 42, 31, 36

    Answer: 32.5

Tuesday 21 February 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄8 + 2⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 8x - 14 = 58

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio

    Share 100 in the ratio 1:4

    Answer: 20 and 80
  5. 5. Statistics

    Find the mean of: 20, 17, 19, 4

    Answer: 15

Wednesday 22 February 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 7⁄8 + 1⁄3

    Answer: 29⁄24
  2. 2. Algebra

    Solve: 2x - 6 = 24

    Answer: x = 15
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio

    Share 42 in the ratio 2:1

    Answer: 28 and 14
  5. 5. Statistics

    Find the mean of: 24, 2, 13, 17

    Answer: 14

Thursday 23 February 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 7x + 13 = 62

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 5cm

    Answer: 13cm
  4. 4. Ratio

    Share 64 in the ratio 3:1

    Answer: 48 and 16
  5. 5. Statistics

    Calculate the mean of: 35, 6, 36, 36, 6, 45, 17. Give your answer to 2 decimal places

    Answer: 25.86

Friday 24 February 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄11 + 1⁄11

    Answer: 3⁄11
  2. 2. Algebra

    Solve: 6x + 3 = 57

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio

    Divide 84 in the ratio 4:1:1

    Answer: 56, 14 and 14
  5. 5. Statistics

    Find the mean of: 15, 11, 16, 1, 7

    Answer: 10