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Cornerstone Jan 27 - Feb 2 25 questions
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Monday 27 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 5x - 15 = 25

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 19.21cm
  4. 4. Ratio

    Share 90 in the ratio 1:2

    Answer: 30 and 60
  5. 5. Statistics

    Find the mean of: 16, 17, 12

    Answer: 15

Tuesday 28 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄12 + 5⁄12

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 6x - 12 = 78

    Answer: x = 15
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 5.83cm
  4. 4. Ratio

    Share 15 in the ratio 1:2

    Answer: 5 and 10
  5. 5. Statistics

    Find the mean of: 17, 5, 5

    Answer: 9

Wednesday 29 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 3⁄4

    Answer: 13⁄12
  2. 2. Algebra

    Solve: 7x + 8 = 36

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Share 25 in the ratio 4:1

    Answer: 20 and 5
  5. 5. Statistics

    Calculate the mean of: 38, 42, 16, 49, 30, 27, 31. Give your answer to 2 decimal places

    Answer: 33.29

Thursday 30 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 1⁄3

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 4x + 5 = 17

    Answer: x = 3
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 6cm

    Answer: 10cm
  4. 4. Ratio

    Share 70 in the ratio 1:4

    Answer: 14 and 56
  5. 5. Statistics

    Calculate the mean of: 44, 50, 42, 20, 20, 25, 24, 26. Give your answer to 2 decimal places

    Answer: 31.38

Friday 31 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄9 + 2⁄9

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 5x - 11 = 59

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Share 50 in the ratio 4:1

    Answer: 40 and 10
  5. 5. Statistics

    Find the mean of: 6, 14, 13

    Answer: 11