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Cornerstone Mar 10 - 16 25 questions
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Monday 10 March 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄11 + 3⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 4x - 7 = 29

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Share 50 in the ratio 1:4

    Answer: 10 and 40
  5. 5. Statistics

    Find the mean of: 5, 16, 14, 4, 16

    Answer: 11

Tuesday 11 March 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄7 + 1⁄3

    Answer: 25⁄21
  2. 2. Algebra

    Solve: 3x + 9 = 33

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 9.85cm
  4. 4. Ratio

    Share 50 in the ratio 3:2

    Answer: 30 and 20
  5. 5. Statistics

    Calculate the mean of: 33, 23, 24, 28, 6, 35, 30. Give your answer to 2 decimal places

    Answer: 25.57

Wednesday 12 March 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄8 + 3⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 2x + 3 = 11

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio

    Share 90 in the ratio 1:4

    Answer: 18 and 72
  5. 5. Statistics

    Calculate the mean of: 38, 22, 14, 10, 17, 27. Give your answer to 2 decimal places

    Answer: 21.33

Thursday 13 March 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄10 + 2⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 2x - 19 = -7

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 10.3cm
  4. 4. Ratio

    Share 84 in the ratio 1:2

    Answer: 28 and 56
  5. 5. Statistics

    Find the mean of: 17, 11, 8

    Answer: 12

Friday 14 March 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 6⁄7

    Answer: 44⁄35
  2. 2. Algebra

    Solve: 4x - 20 = 40

    Answer: x = 15
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio

    Divide 150 in the ratio 1:4:1

    Answer: 25, 100 and 25
  5. 5. Statistics

    Calculate the mean of: 33, 5, 24, 21, 38, 50, 45. Give your answer to 2 decimal places

    Answer: 30.86