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Cornerstone Aug 9 - 15 25 questions
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Monday 9 August 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄7 + 7⁄8

    Answer: 65⁄56
  2. 2. Algebra

    Solve: 4x - 10 = 50

    Answer: x = 15
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 13.6cm
  4. 4. Ratio

    Share 126 in the ratio 4:3

    Answer: 72 and 54
  5. 5. Statistics

    Find the mean of: 20, 20, 5, 9, 16

    Answer: 14

Tuesday 10 August 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄8 + 4⁄5

    Answer: 31⁄20
  2. 2. Algebra

    Solve: 7x - 8 = 20

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio

    Share 100 in the ratio 1:4

    Answer: 20 and 80
  5. 5. Statistics

    Find the mean of: 13, 6, 14

    Answer: 11

Wednesday 11 August 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 1⁄5

    Answer: 2⁄5
  2. 2. Algebra

    Solve: 5x + 10 = 45

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 10.63cm
  4. 4. Ratio

    Share 21 in the ratio 2:1

    Answer: 14 and 7
  5. 5. Statistics

    Calculate the mean of: 25, 28, 44, 36, 22, 27, 11, 23

    Answer: 27

Thursday 12 August 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 1⁄8

    Answer: 13⁄40
  2. 2. Algebra

    Solve: 7x + 4 = 39

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Share 20 in the ratio 1:3

    Answer: 5 and 15
  5. 5. Statistics

    Calculate the mean of: 26, 12, 25, 15, 5, 34

    Answer: 19.5

Friday 13 August 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄10 + 5⁄10

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 6x - 14 = 22

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 10.77cm
  4. 4. Ratio

    Share 30 in the ratio 3:2

    Answer: 18 and 12
  5. 5. Statistics

    Find the mean of: 8, 16, 10, 18

    Answer: 13