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Cornerstone Mar 7 - 13 25 questions
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Monday 7 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄8 + 3⁄4

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 3x - 7 = 5

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio

    Divide 91 in the ratio 3:1:3

    Answer: 39, 13 and 39
  5. 5. Statistics

    Find the mean of: 7, 21, 11

    Answer: 13

Tuesday 8 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄8 + 1⁄4

    Answer: 5⁄8
  2. 2. Algebra

    Solve: 4x - 12 = 32

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 11.66cm
  4. 4. Ratio

    Divide 220 in the ratio 4:3:4

    Answer: 80, 60 and 80
  5. 5. Statistics

    Find the mean of: 13, 9, 14

    Answer: 12

Wednesday 9 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄9 + 1⁄9

    Answer: 7⁄9
  2. 2. Algebra

    Solve: 5x + 8 = 23

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Divide 225 in the ratio 2:4:3

    Answer: 50, 100 and 75
  5. 5. Statistics

    Calculate the mean of: 33, 22, 31, 47, 42, 50, 21, 47. Give your answer to 2 decimal places

    Answer: 36.63

Thursday 10 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 2x + 12 = 20

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 18.44cm
  4. 4. Ratio

    Divide 180 in the ratio 3:2:1

    Answer: 90, 60 and 30
  5. 5. Statistics

    Calculate the mean of: 8, 26, 28, 13, 40, 5, 31. Give your answer to 2 decimal places

    Answer: 21.57

Friday 11 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 2⁄6

    Answer: 7⁄12
  2. 2. Algebra

    Solve: 5x - 19 = 1

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 260 in the ratio 2:1:2

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

    Find the mean of: 2, 11, 3, 16

    Answer: 8