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Cornerstone May 16 - 22 25 questions
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Monday 16 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 1⁄6

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 3x - 20 = 4

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Divide 60 in the ratio 1:3:2

    Answer: 10, 30 and 20
  5. 5. Statistics

    Find the mean of: 20, 19, 20, 3, 3

    Answer: 13

Tuesday 17 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 5⁄7

    Answer: 17⁄14
  2. 2. Algebra

    Solve: 5x + 7 = 22

    Answer: x = 3
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio

    Divide 231 in the ratio 3:4:4

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

    Calculate the mean of: 26, 30, 38, 10, 12, 15, 20. Give your answer to 2 decimal places

    Answer: 21.57

Wednesday 18 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 3⁄6

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 3x + 9 = 18

    Answer: x = 3
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 12.08cm
  4. 4. Ratio

    Divide 144 in the ratio 3:1:2

    Answer: 72, 24 and 48
  5. 5. Statistics

    Calculate the mean of: 8, 13, 18, 15, 20, 8, 42, 27. Give your answer to 2 decimal places

    Answer: 18.88

Thursday 19 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄9 + 1⁄9

    Answer: 7⁄9
  2. 2. Algebra

    Solve: 8x - 5 = 59

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 10.82cm
  4. 4. Ratio

    Divide 140 in the ratio 2:1:2

    Answer: 56, 28 and 56
  5. 5. Statistics

    Find the mean of: 3, 5, 5, 17, 5

    Answer: 7

Friday 20 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 1⁄7

    Answer: 41⁄42
  2. 2. Algebra

    Solve: 6x - 9 = 75

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 12.04cm
  4. 4. Ratio

    Divide 175 in the ratio 3:3:1

    Answer: 75, 75 and 25
  5. 5. Statistics

    Calculate the mean of: 49, 38, 43, 12, 46, 20. Give your answer to 2 decimal places

    Answer: 34.67