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Cornerstone Dec 24 - 30 25 questions
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Monday 24 December 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 3⁄7

    Answer: 19⁄28
  2. 2. Algebra

    Solve: 6x + 10 = 64

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Divide 182 in the ratio 1:4:2

    Answer: 26, 104 and 52
  5. 5. Statistics

    Find the mean of: 17, 2, 9, 20

    Answer: 12

Tuesday 25 December 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄12 + 6⁄12

    Answer: 7⁄12
  2. 2. Algebra

    Solve: 2x - 15 = 15

    Answer: x = 15
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 14.42cm
  4. 4. Ratio

    Divide 160 in the ratio 4:3:3

    Answer: 64, 48 and 48
  5. 5. Statistics

    Calculate the mean of: 16, 18, 10, 13, 23, 17. Give your answer to 2 decimal places

    Answer: 16.17

Wednesday 26 December 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄6 + 1⁄4

    Answer: 7⁄12
  2. 2. Algebra

    Solve: 5x - 11 = 44

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Divide 144 in the ratio 3:4:2

    Answer: 48, 64 and 32
  5. 5. Statistics

    Calculate the mean of: 42, 17, 10, 34, 15, 21, 15, 14

    Answer: 21

Thursday 27 December 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄10 + 4⁄10

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 2x + 11 = 21

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 17.2cm
  4. 4. Ratio

    Divide 154 in the ratio 1:2:4

    Answer: 22, 44 and 88
  5. 5. Statistics

    Find the mean of: 18, 15, 6

    Answer: 13

Friday 28 December 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 7x + 14 = 42

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 12cm

    Answer: 15cm
  4. 4. Ratio

    Divide 108 in the ratio 4:2:3

    Answer: 48, 24 and 36
  5. 5. Statistics

    Find the mean of: 16, 9, 14

    Answer: 13