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Cornerstone Jan 24 - 30 25 questions
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Monday 24 January 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 2⁄3

    Answer: 23⁄21
  2. 2. Algebra

    Solve: 7x + 13 = 90

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.55cm
  4. 4. Ratio

    Divide 156 in the ratio 2:1:3

    Answer: 52, 26 and 78
  5. 5. Statistics

    Calculate the mean of: 37, 17, 13, 17, 36, 45, 38, 33

    Answer: 29.5

Tuesday 25 January 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄11 + 3⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 4x - 17 = 35

    Answer: x = 13
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 99 in the ratio 2:4:3

    Answer: 22, 44 and 33
  5. 5. Statistics

    Find the mean of: 6, 9, 19, 6

    Answer: 10

Wednesday 26 January 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 2⁄5

    Answer: 13⁄20
  2. 2. Algebra

    Solve: 6x - 20 = 16

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 6.71cm
  4. 4. Ratio

    Divide 208 in the ratio 3:4:1

    Answer: 78, 104 and 26
  5. 5. Statistics

    Find the mean of: 6, 4, 3, 13, 14

    Answer: 8

Thursday 27 January 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄8 + 2⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 4x + 7 = 39

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Divide 135 in the ratio 2:1:2

    Answer: 54, 27 and 54
  5. 5. Statistics

    Calculate the mean of: 43, 26, 18, 16, 36, 35, 22

    Answer: 28

Friday 28 January 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄6 + 3⁄6

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 7x + 7 = 77

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio

    Divide 240 in the ratio 4:1:3

    Answer: 120, 30 and 90
  5. 5. Statistics

    Calculate the mean of: 27, 40, 5, 33, 43, 21, 42, 27

    Answer: 29.75