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Cornerstone Oct 1 - 7 25 questions
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Monday 1 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 4⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 2x + 9 = 31

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 10.3cm
  4. 4. Ratio

    Share 27 in the ratio 2:1

    Answer: 18 and 9
  5. 5. Statistics

    Calculate the mean of: 42, 19, 43, 30, 16, 45, 6, 6. Give your answer to 2 decimal places

    Answer: 25.88

Tuesday 2 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 2⁄3

    Answer: 23⁄21
  2. 2. Algebra

    Solve: 5x + 13 = 58

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 50 in the ratio 2:3

    Answer: 20 and 30
  5. 5. Statistics

    Calculate the mean of: 31, 11, 30, 12, 30, 39

    Answer: 25.5

Wednesday 3 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 7x - 11 = 24

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.54cm
  4. 4. Ratio

    Share 60 in the ratio 3:1

    Answer: 45 and 15
  5. 5. Statistics

    Find the mean of: 5, 4, 14, 6, 16

    Answer: 9

Thursday 4 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄11 + 4⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 5x - 16 = 29

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio

    Divide 80 in the ratio 3:4:1

    Answer: 30, 40 and 10
  5. 5. Statistics

    Calculate the mean of: 23, 30, 7, 20, 23, 12. Give your answer to 2 decimal places

    Answer: 19.17

Friday 5 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 5⁄8

    Answer: 11⁄8
  2. 2. Algebra

    Solve: 3x + 11 = 29

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Divide 84 in the ratio 3:1:3

    Answer: 36, 12 and 36
  5. 5. Statistics

    Find the mean of: 11, 4, 6

    Answer: 7