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Cornerstone Nov 22 - 28 25 questions
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Monday 22 November 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄12 + 6⁄12

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 7x - 10 = 46

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics

    Calculate the mean of: 11, 33, 14, 37, 49, 44, 5. Give your answer to 2 decimal places

    Answer: 27.57

Tuesday 23 November 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄8 + 5⁄6

    Answer: 13⁄12
  2. 2. Algebra

    Solve: 7x + 8 = 43

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 45 in the ratio 4:1

    Answer: 36 and 9
  5. 5. Statistics

    Find the mean of: 2, 9, 24, 17, 18

    Answer: 14

Wednesday 24 November 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 5⁄7

    Answer: 22⁄21
  2. 2. Algebra

    Solve: 4x + 3 = 39

    Answer: x = 9
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio

    Divide 135 in the ratio 2:3:4

    Answer: 30, 45 and 60
  5. 5. Statistics

    Calculate the mean of: 12, 24, 27, 13, 11, 41, 11, 11

    Answer: 18.75

Thursday 25 November 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄10 + 2⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 2x - 17 = 11

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.03cm
  4. 4. Ratio

    Divide 104 in the ratio 2:1:1

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

    Find the mean of: 8, 6, 25, 3, 3

    Answer: 9

Friday 26 November 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 2⁄4

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 2x - 12 = 18

    Answer: x = 15
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Divide 133 in the ratio 3:3:1

    Answer: 57, 57 and 19
  5. 5. Statistics

    Find the mean of: 6, 4, 9, 9, 22

    Answer: 10