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Cornerstone Dec 27 - Jan 2 25 questions
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Monday 27 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 6x + 9 = 39

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 95 in the ratio 1:4

    Answer: 19 and 76
  5. 5. Statistics

    Calculate the mean of: 15, 14, 9, 31, 13, 41

    Answer: 20.5

Tuesday 28 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 5x + 15 = 55

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 50 in the ratio 4:1

    Answer: 40 and 10
  5. 5. Statistics

    Calculate the mean of: 16, 9, 41, 32, 30, 41. Give your answer to 2 decimal places

    Answer: 28.17

Wednesday 29 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄8 + 1⁄6

    Answer: 13⁄24
  2. 2. Algebra

    Solve: 4x - 17 = 7

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.32cm
  4. 4. Ratio

    Share 60 in the ratio 2:1

    Answer: 40 and 20
  5. 5. Statistics

    Find the mean of: 4, 4, 17, 12, 13

    Answer: 10

Thursday 30 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 3⁄7

    Answer: 59⁄56
  2. 2. Algebra

    Solve: 7x - 6 = 92

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 91 in the ratio 3:4

    Answer: 39 and 52
  5. 5. Statistics

    Find the mean of: 6, 7, 5

    Answer: 6

Friday 31 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄12 + 3⁄12

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 2x + 3 = 19

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.16cm
  4. 4. Ratio

    Share 64 in the ratio 1:3

    Answer: 16 and 48
  5. 5. Statistics

    Calculate the mean of: 14, 38, 15, 33, 39, 32, 7, 8

    Answer: 23.25