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Cornerstone Aug 23 - 29 25 questions
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Monday 23 August 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄10 + 8⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 2x + 15 = 35

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.3cm
  4. 4. Ratio

    Divide 270 in the ratio 4:4:1

    Answer: 120, 120 and 30
  5. 5. Statistics

    Calculate the mean of: 21, 24, 13, 23, 44, 8, 10. Give your answer to 2 decimal places

    Answer: 20.43

Tuesday 24 August 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄11 + 2⁄11

    Answer: 7⁄11
  2. 2. Algebra

    Solve: 3x + 7 = 40

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 9.43cm
  4. 4. Ratio

    Share 40 in the ratio 3:1

    Answer: 30 and 10
  5. 5. Statistics

    Find the mean of: 12, 6, 16, 6

    Answer: 10

Wednesday 25 August 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄7 + 4⁄6

    Answer: 29⁄21
  2. 2. Algebra

    Solve: 8x - 16 = 48

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Share 68 in the ratio 3:1

    Answer: 51 and 17
  5. 5. Statistics

    Calculate the mean of: 39, 12, 11, 9, 8, 34, 31. Give your answer to 2 decimal places

    Answer: 20.57

Thursday 26 August 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 5x - 13 = 17

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.21cm
  4. 4. Ratio

    Share 24 in the ratio 1:3

    Answer: 6 and 18
  5. 5. Statistics

    Calculate the mean of: 11, 39, 13, 40, 32, 42

    Answer: 29.5

Friday 27 August 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 6⁄7

    Answer: 19⁄14
  2. 2. Algebra

    Solve: 2x + 6 = 12

    Answer: x = 3
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Share 114 in the ratio 2:1

    Answer: 76 and 38
  5. 5. Statistics

    Find the mean of: 6, 17, 17, 12

    Answer: 13