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Cornerstone Sep 20 - 26 25 questions
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Monday 20 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 7⁄8

    Answer: 11⁄8
  2. 2. Algebra

    Solve: 4x - 19 = 41

    Answer: x = 15
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio

    Share 75 in the ratio 1:4

    Answer: 15 and 60
  5. 5. Statistics

    Calculate the mean of: 39, 35, 11, 45, 41, 19, 22, 20

    Answer: 29

Tuesday 21 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄9 + 3⁄9

    Answer: 4⁄9
  2. 2. Algebra

    Solve: 5x + 4 = 34

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 8cm

    Answer: 10cm
  4. 4. Ratio

    Share 105 in the ratio 4:3

    Answer: 60 and 45
  5. 5. Statistics

    Find the mean of: 12, 5, 9, 14

    Answer: 10

Wednesday 22 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 7⁄8

    Answer: 81⁄56
  2. 2. Algebra

    Solve: 7x + 10 = 80

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Share 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics

    Find the mean of: 16, 14, 11, 5, 14

    Answer: 12

Thursday 23 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄9 + 4⁄9

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 7x - 19 = 44

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio

    Share 56 in the ratio 3:1

    Answer: 42 and 14
  5. 5. Statistics

    Calculate the mean of: 17, 49, 27, 45, 33, 5, 37. Give your answer to 2 decimal places

    Answer: 30.43

Friday 24 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 4x - 12 = 40

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 14.42cm
  4. 4. Ratio

    Divide 130 in the ratio 3:4:3

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

    Find the mean of: 6, 14, 19, 17

    Answer: 14