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Cornerstone Feb 28 - Mar 6 25 questions
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Monday 28 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄8 + 1⁄8

    Answer: 3⁄8
  2. 2. Algebra

    Solve: 6x + 3 = 21

    Answer: x = 3
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 11.7cm
  4. 4. Ratio

    Share 24 in the ratio 1:3

    Answer: 6 and 18
  5. 5. Statistics

    Calculate the mean of: 24, 12, 32, 11, 5, 36, 36, 41. Give your answer to 2 decimal places

    Answer: 24.63

Tuesday 1 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄9 + 4⁄9

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 6x + 9 = 51

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 49 in the ratio 4:3

    Answer: 28 and 21
  5. 5. Statistics

    Find the mean of: 3, 23, 4

    Answer: 10

Wednesday 2 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 1⁄3

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 4x + 15 = 31

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio

    Share 75 in the ratio 4:1

    Answer: 60 and 15
  5. 5. Statistics

    Find the mean of: 8, 14, 7, 19

    Answer: 12

Thursday 3 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄9 + 1⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 3x - 16 = 20

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 30 in the ratio 2:1

    Answer: 20 and 10
  5. 5. Statistics

    Calculate the mean of: 44, 15, 27, 38, 15, 33. Give your answer to 2 decimal places

    Answer: 28.67

Friday 4 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 2x - 18 = -8

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 20cm
  4. 4. Ratio

    Divide 216 in the ratio 1:1:2

    Answer: 54, 54 and 108
  5. 5. Statistics

    Find the mean of: 6, 3, 18, 16, 7

    Answer: 10