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Cornerstone Nov 10 - 16 25 questions
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Monday 10 November 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 1⁄3

    Answer: 11⁄15
  2. 2. Algebra

    Solve: 7x + 13 = 90

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Share 45 in the ratio 1:4

    Answer: 9 and 36
  5. 5. Statistics

    Find the mean of: 2, 18, 10

    Answer: 10

Tuesday 11 November 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄9 + 2⁄9

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 4x - 13 = 31

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Share 75 in the ratio 4:1

    Answer: 60 and 15
  5. 5. Statistics

    Calculate the mean of: 20, 41, 6, 33, 5, 45, 49, 32. Give your answer to 2 decimal places

    Answer: 28.88

Wednesday 12 November 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄8 + 1⁄4

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 8x - 12 = 84

    Answer: x = 12
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio

    Share 24 in the ratio 3:1

    Answer: 18 and 6
  5. 5. Statistics

    Calculate the mean of: 17, 26, 42, 15, 25, 12. Give your answer to 2 decimal places

    Answer: 22.83

Thursday 13 November 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 3x + 10 = 25

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 11.7cm
  4. 4. Ratio

    Share 40 in the ratio 2:3

    Answer: 16 and 24
  5. 5. Statistics

    Find the mean of: 19, 10, 15, 8

    Answer: 13

Friday 14 November 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄8 + 5⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 4x + 13 = 57

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 16.28cm
  4. 4. Ratio

    Divide 171 in the ratio 4:3:2

    Answer: 76, 57 and 38
  5. 5. Statistics

    Calculate the mean of: 8, 22, 26, 25, 49, 6. Give your answer to 2 decimal places

    Answer: 22.67