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Cornerstone Jul 2 - 8 25 questions
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Monday 2 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 5⁄6

    Answer: 3⁄2
  2. 2. Algebra

    Solve: 8x - 11 = 85

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.77cm
  4. 4. Ratio

    Share 60 in the ratio 4:1

    Answer: 48 and 12
  5. 5. Statistics

    Find the mean of: 18, 19, 15, 5, 3

    Answer: 12

Tuesday 3 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 7x + 6 = 76

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Share 72 in the ratio 1:2

    Answer: 24 and 48
  5. 5. Statistics

    Calculate the mean of: 20, 31, 37, 32, 31, 29, 38, 32

    Answer: 31.25

Wednesday 4 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄11 + 1⁄11

    Answer: 5⁄11
  2. 2. Algebra

    Solve: 6x + 3 = 27

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Divide 70 in the ratio 1:4:2

    Answer: 10, 40 and 20
  5. 5. Statistics

    Find the mean of: 17, 5, 9, 9

    Answer: 10

Thursday 5 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 4⁄5

    Answer: 21⁄20
  2. 2. Algebra

    Solve: 4x - 20 = 8

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio

    Divide 182 in the ratio 2:4:1

    Answer: 52, 104 and 26
  5. 5. Statistics

    Calculate the mean of: 12, 45, 17, 32, 21, 27, 30. Give your answer to 2 decimal places

    Answer: 26.29

Friday 6 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄10 + 1⁄10

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 7x - 10 = 18

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio

    Divide 208 in the ratio 3:4:1

    Answer: 78, 104 and 26
  5. 5. Statistics

    Calculate the mean of: 21, 18, 41, 21, 46, 22. Give your answer to 2 decimal places

    Answer: 28.17