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Cornerstone Mar 19 - 25 25 questions
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Monday 19 March 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄11 + 6⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 3x - 5 = 19

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 12.73cm
  4. 4. Ratio

    Divide 84 in the ratio 4:1:2

    Answer: 48, 12 and 24
  5. 5. Statistics

    Find the mean of: 5, 17, 3, 14, 11

    Answer: 10

Tuesday 20 March 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 3⁄4

    Answer: 33⁄28
  2. 2. Algebra

    Solve: 3x - 15 = 15

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 7.21cm
  4. 4. Ratio

    Divide 91 in the ratio 4:2:1

    Answer: 52, 26 and 13
  5. 5. Statistics

    Calculate the mean of: 39, 16, 28, 32, 36, 34, 49. Give your answer to 2 decimal places

    Answer: 33.43

Wednesday 21 March 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄10 + 4⁄10

    Answer: 7⁄10
  2. 2. Algebra

    Solve: 5x + 8 = 38

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 13.04cm
  4. 4. Ratio

    Divide 120 in the ratio 4:1:1

    Answer: 80, 20 and 20
  5. 5. Statistics

    Find the mean of: 11, 8, 23

    Answer: 14

Thursday 22 March 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 2⁄5

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 2x + 15 = 29

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Divide 125 in the ratio 2:1:2

    Answer: 50, 25 and 50
  5. 5. Statistics

    Find the mean of: 1, 6, 13, 10, 5

    Answer: 7

Friday 23 March 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 6x - 19 = 23

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 14.32cm
  4. 4. Ratio

    Divide 90 in the ratio 4:3:2

    Answer: 40, 30 and 20
  5. 5. Statistics

    Calculate the mean of: 47, 35, 47, 47, 10, 37, 22, 41

    Answer: 35.75