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Cornerstone Sep 13 - 19 25 questions
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Monday 13 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 7x + 8 = 29

    Answer: x = 3
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio

    Divide 176 in the ratio 3:1:4

    Answer: 66, 22 and 88
  5. 5. Statistics

    Find the mean of: 15, 4, 14

    Answer: 11

Tuesday 14 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄11 + 3⁄11

    Answer: 8⁄11
  2. 2. Algebra

    Solve: 7x + 9 = 30

    Answer: x = 3
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio

    Share 102 in the ratio 2:1

    Answer: 68 and 34
  5. 5. Statistics

    Calculate the mean of: 21, 9, 38, 23, 19, 30, 28, 27. Give your answer to 2 decimal places

    Answer: 24.38

Wednesday 15 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 7⁄8 + 4⁄6

    Answer: 37⁄24
  2. 2. Algebra

    Solve: 4x - 10 = 46

    Answer: x = 14
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio

    Share 140 in the ratio 4:3

    Answer: 80 and 60
  5. 5. Statistics

    Find the mean of: 13, 20, 7, 11, 14

    Answer: 13

Thursday 16 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄6 + 1⁄6

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 8x - 8 = 24

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.52cm
  4. 4. Ratio

    Share 72 in the ratio 1:2

    Answer: 24 and 48
  5. 5. Statistics

    Find the mean of: 19, 3, 8

    Answer: 10

Friday 17 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄5 + 2⁄3

    Answer: 19⁄15
  2. 2. Algebra

    Solve: 3x + 12 = 42

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 65 in the ratio 3:2

    Answer: 39 and 26
  5. 5. Statistics

    Calculate the mean of: 7, 45, 37, 8, 13, 20, 33. Give your answer to 2 decimal places

    Answer: 23.29