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Cornerstone Jun 30 - Jul 6 25 questions
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Monday 30 June 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 1⁄7

    Answer: 3⁄7
  2. 2. Algebra

    Solve: 7x - 7 = 98

    Answer: x = 15
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Share 90 in the ratio 2:3

    Answer: 36 and 54
  5. 5. Statistics

    Find the mean of: 4, 7, 15, 2

    Answer: 7

Tuesday 1 July 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 5⁄7

    Answer: 27⁄28
  2. 2. Algebra

    Solve: 3x + 7 = 16

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 105 in the ratio 3:4

    Answer: 45 and 60
  5. 5. Statistics

    Find the mean of: 24, 17, 8, 11

    Answer: 15

Wednesday 2 July 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄9 + 1⁄9

    Answer: 2⁄9
  2. 2. Algebra

    Solve: 5x + 8 = 43

    Answer: x = 7
  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 30 in the ratio 2:3

    Answer: 12 and 18
  5. 5. Statistics

    Find the mean of: 13, 14, 18

    Answer: 15

Thursday 3 July 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄5 + 2⁄7

    Answer: 38⁄35
  2. 2. Algebra

    Solve: 4x - 16 = 0

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Share 18 in the ratio 2:1

    Answer: 12 and 6
  5. 5. Statistics

    Calculate the mean of: 10, 10, 49, 35, 9, 48, 14, 21

    Answer: 24.5

Friday 4 July 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄6 + 3⁄7

    Answer: 25⁄42
  2. 2. Algebra

    Solve: 7x - 5 = 79

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Divide 143 in the ratio 3:4:4

    Answer: 39, 52 and 52
  5. 5. Statistics

    Find the mean of: 15, 5, 20, 8

    Answer: 12