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Cornerstone Jan 23 - 29 25 questions
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Monday 23 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄8 + 2⁄8

    Answer: 3⁄8
  2. 2. Algebra

    Solve: 4x + 3 = 31

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Divide 92 in the ratio 1:2:1

    Answer: 23, 46 and 23
  5. 5. Statistics

    Calculate the mean of: 43, 27, 28, 33, 43, 14, 27, 31

    Answer: 30.75

Tuesday 24 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 7x + 4 = 46

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Share 27 in the ratio 1:2

    Answer: 9 and 18
  5. 5. Statistics

    Find the mean of: 20, 14, 2

    Answer: 12

Wednesday 25 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄7 + 2⁄4

    Answer: 19⁄14
  2. 2. Algebra

    Solve: 6x - 11 = 19

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 17.8cm
  4. 4. Ratio

    Share 30 in the ratio 4:1

    Answer: 24 and 6
  5. 5. Statistics

    Calculate the mean of: 15, 32, 46, 14, 40, 27, 6. Give your answer to 2 decimal places

    Answer: 25.71

Thursday 26 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄10 + 1⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 8x - 5 = 75

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 13.45cm
  4. 4. Ratio

    Share 40 in the ratio 4:1

    Answer: 32 and 8
  5. 5. Statistics

    Calculate the mean of: 33, 13, 29, 5, 46, 31, 6, 40. Give your answer to 2 decimal places

    Answer: 25.38

Friday 27 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 4⁄6

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 5x + 5 = 50

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 12.21cm
  4. 4. Ratio

    Share 90 in the ratio 1:2

    Answer: 30 and 60
  5. 5. Statistics

    Find the mean of: 2, 21, 7

    Answer: 10