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Cornerstone Oct 9 - 15 25 questions
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Monday 9 October 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄12 + 2⁄12

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 3x - 7 = 5

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Share 70 in the ratio 3:4

    Answer: 30 and 40
  5. 5. Statistics

    Calculate the mean of: 29, 14, 34, 40, 6, 27, 22, 40

    Answer: 26.5

Tuesday 10 October 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄11 + 5⁄11

    Answer: 9⁄11
  2. 2. Algebra

    Solve: 8x - 14 = 106

    Answer: x = 15
  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

    Share 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics

    Calculate the mean of: 42, 37, 39, 20, 21, 35. Give your answer to 2 decimal places

    Answer: 32.33

Wednesday 11 October 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 5⁄7

    Answer: 41⁄28
  2. 2. Algebra

    Solve: 6x + 6 = 60

    Answer: x = 9
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio

    Share 42 in the ratio 4:3

    Answer: 24 and 18
  5. 5. Statistics

    Find the mean of: 18, 3, 11, 4

    Answer: 9

Thursday 12 October 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 5x + 13 = 53

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio

    Share 72 in the ratio 1:3

    Answer: 18 and 54
  5. 5. Statistics

    Find the mean of: 10, 5, 13, 20

    Answer: 12

Friday 13 October 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 6⁄7

    Answer: 71⁄42
  2. 2. Algebra

    Solve: 7x - 13 = 78

    Answer: x = 13
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 35 in the ratio 4:1

    Answer: 28 and 7
  5. 5. Statistics

    Calculate the mean of: 21, 5, 25, 23, 24, 45, 22, 46. Give your answer to 2 decimal places

    Answer: 26.38