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Cornerstone Dec 6 - 12 25 questions
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Monday 6 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 1⁄5

    Answer: 2⁄5
  2. 2. Algebra

    Solve: 2x - 12 = 0

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 13.89cm
  4. 4. Ratio

    Share 64 in the ratio 1:3

    Answer: 16 and 48
  5. 5. Statistics

    Calculate the mean of: 16, 42, 25, 7, 19, 48, 24, 23

    Answer: 25.5

Tuesday 7 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄5 + 2⁄3

    Answer: 19⁄15
  2. 2. Algebra

    Solve: 2x + 7 = 21

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Share 56 in the ratio 1:3

    Answer: 14 and 42
  5. 5. Statistics

    Find the mean of: 4, 11, 12

    Answer: 9

Wednesday 8 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 1⁄3

    Answer: 13⁄12
  2. 2. Algebra

    Solve: 7x + 12 = 61

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 70 in the ratio 4:1

    Answer: 56 and 14
  5. 5. Statistics

    Find the mean of: 10, 17, 3

    Answer: 10

Thursday 9 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄11 + 2⁄11

    Answer: 9⁄11
  2. 2. Algebra

    Solve: 3x - 8 = 16

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 12.73cm
  4. 4. Ratio

    Share 85 in the ratio 4:1

    Answer: 68 and 17
  5. 5. Statistics

    Calculate the mean of: 42, 11, 50, 14, 44, 48, 17, 29. Give your answer to 2 decimal places

    Answer: 31.88

Friday 10 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 8x - 9 = 87

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 54 in the ratio 2:1

    Answer: 36 and 18
  5. 5. Statistics

    Calculate the mean of: 19, 48, 46, 48, 28, 36

    Answer: 37.5