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Cornerstone Nov 20 - 26 25 questions
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Monday 20 November 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 7x - 7 = 49

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 10.3cm
  4. 4. Ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics

    Find the mean of: 9, 16, 17, 6

    Answer: 12

Tuesday 21 November 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄5 + 5⁄7

    Answer: 53⁄35
  2. 2. Algebra

    Solve: 4x + 5 = 45

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Share 133 in the ratio 4:3

    Answer: 76 and 57
  5. 5. Statistics

    Calculate the mean of: 44, 31, 38, 7, 12, 24, 37. Give your answer to 2 decimal places

    Answer: 27.57

Wednesday 22 November 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 5x + 7 = 22

    Answer: x = 3
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 12.81cm
  4. 4. Ratio

    Share 39 in the ratio 1:2

    Answer: 13 and 26
  5. 5. Statistics

    Calculate the mean of: 30, 13, 50, 5, 27, 20, 13. Give your answer to 2 decimal places

    Answer: 22.57

Thursday 23 November 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 2⁄3

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 7x - 18 = 10

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Share 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics

    Find the mean of: 10, 14, 10, 2

    Answer: 9

Friday 24 November 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 2⁄4

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 3x - 6 = 33

    Answer: x = 13
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Divide 175 in the ratio 1:2:4

    Answer: 25, 50 and 100
  5. 5. Statistics

    Calculate the mean of: 46, 42, 10, 50, 29, 47. Give your answer to 2 decimal places

    Answer: 37.33