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Cornerstone Dec 15 - 21 25 questions
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Monday 15 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 1⁄4

    Answer: 7⁄12
  2. 2. Algebra

    Solve: 3x - 9 = 12

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio

    Share 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics

    Find the mean of: 16, 16, 3, 5

    Answer: 10

Tuesday 16 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄10 + 5⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 6x - 18 = 12

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 60 in the ratio 2:3

    Answer: 24 and 36
  5. 5. Statistics

    Find the mean of: 8, 7, 7, 14

    Answer: 9

Wednesday 17 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄7 + 3⁄8

    Answer: 61⁄56
  2. 2. Algebra

    Solve: 5x + 12 = 37

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 11.18cm
  4. 4. Ratio

    Share 90 in the ratio 4:1

    Answer: 72 and 18
  5. 5. Statistics

    Calculate the mean of: 33, 17, 46, 10, 43, 44, 18, 34. Give your answer to 2 decimal places

    Answer: 30.63

Thursday 18 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄8 + 3⁄5

    Answer: 39⁄40
  2. 2. Algebra

    Solve: 6x + 12 = 66

    Answer: x = 9
  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 45 in the ratio 1:4

    Answer: 9 and 36
  5. 5. Statistics

    Calculate the mean of: 45, 31, 32, 19, 14, 23, 45, 23

    Answer: 29

Friday 19 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄7 + 1⁄7

    Answer: 4⁄7
  2. 2. Algebra

    Solve: 5x - 10 = 40

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Share 100 in the ratio 4:1

    Answer: 80 and 20
  5. 5. Statistics

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

    Answer: 7