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Cornerstone Feb 18 - 24 25 questions
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Monday 18 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄9 + 1⁄9

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 7x - 12 = 58

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio

    Share 27 in the ratio 2:1

    Answer: 18 and 9
  5. 5. Statistics

    Calculate the mean of: 20, 29, 28, 18, 17, 49, 45, 18

    Answer: 28

Tuesday 19 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄5 + 1⁄3

    Answer: 14⁄15
  2. 2. Algebra

    Solve: 2x + 5 = 21

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.44cm
  4. 4. Ratio

    Share 91 in the ratio 4:3

    Answer: 52 and 39
  5. 5. Statistics

    Find the mean of: 5, 8, 25, 14

    Answer: 13

Wednesday 20 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 2x + 7 = 23

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Share 98 in the ratio 4:3

    Answer: 56 and 42
  5. 5. Statistics

    Calculate the mean of: 37, 28, 50, 31, 24, 22, 23, 50. Give your answer to 2 decimal places

    Answer: 33.13

Thursday 21 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄5 + 3⁄7

    Answer: 36⁄35
  2. 2. Algebra

    Solve: 4x - 19 = 9

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 7.62cm
  4. 4. Ratio

    Share 64 in the ratio 1:3

    Answer: 16 and 48
  5. 5. Statistics

    Find the mean of: 4, 16, 16

    Answer: 12

Friday 22 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄10 + 1⁄10

    Answer: 7⁄10
  2. 2. Algebra

    Solve: 3x - 14 = 1

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics

    Find the mean of: 8, 14, 11

    Answer: 11