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Cornerstone Feb 14 - 20 25 questions
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Monday 14 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄6 + 6⁄7

    Answer: 25⁄21
  2. 2. Algebra

    Solve: 6x - 17 = 67

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 130 in the ratio 2:1:2

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

    Find the mean of: 10, 7, 4

    Answer: 7

Tuesday 15 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄10 + 1⁄10

    Answer: 7⁄10
  2. 2. Algebra

    Solve: 4x + 6 = 38

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 13.6cm
  4. 4. Ratio

    Divide 168 in the ratio 1:3:4

    Answer: 21, 63 and 84
  5. 5. Statistics

    Calculate the mean of: 30, 9, 37, 12, 16, 28

    Answer: 22

Wednesday 16 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄7 + 1⁄3

    Answer: 10⁄21
  2. 2. Algebra

    Solve: 4x + 12 = 52

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Divide 100 in the ratio 2:1:2

    Answer: 40, 20 and 40
  5. 5. Statistics

    Calculate the mean of: 36, 22, 40, 37, 50, 7, 13. Give your answer to 2 decimal places

    Answer: 29.29

Thursday 17 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄12 + 2⁄12

    Answer: 7⁄12
  2. 2. Algebra

    Solve: 7x - 19 = 16

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 9.9cm
  4. 4. Ratio

    Divide 168 in the ratio 1:1:2

    Answer: 42, 42 and 84
  5. 5. Statistics

    Find the mean of: 20, 20, 8, 8

    Answer: 14

Friday 18 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄9 + 1⁄9

    Answer: 2⁄9
  2. 2. Algebra

    Solve: 3x - 10 = 11

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 7.07cm
  4. 4. Ratio

    Divide 52 in the ratio 1:2:1

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

    Find the mean of: 19, 12, 11

    Answer: 14