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Cornerstone Jul 5 - 11 25 questions
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Monday 5 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 2⁄4

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 8x - 8 = 104

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 30 in the ratio 1:2

    Answer: 10 and 20
  5. 5. Statistics

    Find the mean of: 14, 14, 21, 11

    Answer: 15

Tuesday 6 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄12 + 1⁄12

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 4x - 12 = 8

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 9.22cm
  4. 4. Ratio

    Share 45 in the ratio 1:4

    Answer: 9 and 36
  5. 5. Statistics

    Find the mean of: 8, 4, 3, 5

    Answer: 5

Wednesday 7 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 2⁄3

    Answer: 31⁄24
  2. 2. Algebra

    Solve: 6x + 3 = 51

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 20cm
  4. 4. Ratio

    Share 64 in the ratio 1:3

    Answer: 16 and 48
  5. 5. Statistics

    Calculate the mean of: 44, 24, 22, 11, 28, 20. Give your answer to 2 decimal places

    Answer: 24.83

Thursday 8 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 2⁄5

    Answer: 29⁄35
  2. 2. Algebra

    Solve: 6x + 4 = 70

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio

    Share 100 in the ratio 1:4

    Answer: 20 and 80
  5. 5. Statistics

    Calculate the mean of: 42, 50, 34, 45, 10, 11, 23. Give your answer to 2 decimal places

    Answer: 30.71

Friday 9 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄9 + 3⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 6x - 19 = 53

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 10.77cm
  4. 4. Ratio

    Share 33 in the ratio 1:2

    Answer: 11 and 22
  5. 5. Statistics

    Find the mean of: 3, 7, 10, 8

    Answer: 7