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Cornerstone Feb 7 - 13 25 questions
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Monday 7 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 4⁄7

    Answer: 15⁄14
  2. 2. Algebra

    Solve: 5x + 4 = 19

    Answer: x = 3
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 7.81cm
  4. 4. Ratio

    Share 42 in the ratio 2:1

    Answer: 28 and 14
  5. 5. Statistics

    Find the mean of: 14, 5, 20

    Answer: 13

Tuesday 8 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄8 + 2⁄4

    Answer: 5⁄8
  2. 2. Algebra

    Solve: 7x + 15 = 99

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 6cm

    Answer: 10cm
  4. 4. Ratio

    Share 48 in the ratio 3:1

    Answer: 36 and 12
  5. 5. Statistics

    Find the mean of: 11, 15, 19, 11

    Answer: 14

Wednesday 9 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 6x - 5 = 79

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Share 44 in the ratio 3:1

    Answer: 33 and 11
  5. 5. Statistics

    Calculate the mean of: 33, 40, 23, 22, 19, 33, 30. Give your answer to 2 decimal places

    Answer: 28.57

Thursday 10 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄7 + 1⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 2x - 17 = -9

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 7.81cm
  4. 4. Ratio

    Share 56 in the ratio 3:4

    Answer: 24 and 32
  5. 5. Statistics

    Calculate the mean of: 25, 23, 9, 8, 32, 26

    Answer: 20.5

Friday 11 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 2⁄8

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 4x + 15 = 35

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Share 85 in the ratio 3:2

    Answer: 51 and 34
  5. 5. Statistics

    Find the mean of: 4, 3, 14

    Answer: 7