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Cornerstone Sep 27 - Oct 3 25 questions
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Monday 27 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 2⁄3

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 3x - 15 = 21

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Divide 170 in the ratio 3:3:4

    Answer: 51, 51 and 68
  5. 5. Statistics

    Find the mean of: 7, 16, 5, 13, 9

    Answer: 10

Tuesday 28 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄7 + 2⁄3

    Answer: 29⁄21
  2. 2. Algebra

    Solve: 8x - 18 = 38

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 210 in the ratio 4:3:3

    Answer: 84, 63 and 63
  5. 5. Statistics

    Find the mean of: 17, 10, 12

    Answer: 13

Wednesday 29 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄10 + 4⁄10

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 3x + 10 = 43

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 13.42cm
  4. 4. Ratio

    Divide 120 in the ratio 1:4:1

    Answer: 20, 80 and 20
  5. 5. Statistics

    Calculate the mean of: 34, 35, 9, 17, 15, 18. Give your answer to 2 decimal places

    Answer: 21.33

Thursday 30 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄9 + 1⁄9

    Answer: 7⁄9
  2. 2. Algebra

    Solve: 7x + 9 = 58

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Divide 126 in the ratio 3:1:3

    Answer: 54, 18 and 54
  5. 5. Statistics

    Calculate the mean of: 46, 12, 40, 22, 26, 31

    Answer: 29.5

Friday 1 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄6 + 1⁄6

    Answer: 1⁄3
  2. 2. Algebra

    Solve: 3x + 6 = 24

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 91 in the ratio 2:4:1

    Answer: 26, 52 and 13
  5. 5. Statistics

    Find the mean of: 12, 3, 9

    Answer: 8