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Cornerstone Jul 10 - 16 25 questions
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Monday 10 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 5x + 11 = 36

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 60 in the ratio 3:2

    Answer: 36 and 24
  5. 5. Statistics

    Find the mean of: 20, 19, 8, 6, 7

    Answer: 12

Tuesday 11 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 1⁄3

    Answer: 13⁄12
  2. 2. Algebra

    Solve: 7x - 8 = 55

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 10.77cm
  4. 4. Ratio

    Share 55 in the ratio 3:2

    Answer: 33 and 22
  5. 5. Statistics

    Calculate the mean of: 28, 43, 20, 40, 6, 40, 45. Give your answer to 2 decimal places

    Answer: 31.71

Wednesday 12 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 8x - 10 = 62

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 45 in the ratio 2:3

    Answer: 18 and 27
  5. 5. Statistics

    Calculate the mean of: 13, 41, 10, 19, 9, 42, 11. Give your answer to 2 decimal places

    Answer: 20.71

Thursday 13 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄8 + 4⁄7

    Answer: 23⁄28
  2. 2. Algebra

    Solve: 6x + 8 = 32

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 10.82cm
  4. 4. Ratio

    Share 91 in the ratio 3:4

    Answer: 39 and 52
  5. 5. Statistics

    Find the mean of: 6, 17, 6, 7, 19

    Answer: 11

Friday 14 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄8 + 2⁄4

    Answer: 1⁄1
  2. 2. Algebra

    Solve: 4x + 11 = 23

    Answer: x = 3
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 17.8cm
  4. 4. Ratio

    Divide 125 in the ratio 1:3:1

    Answer: 25, 75 and 25
  5. 5. Statistics

    Calculate the mean of: 23, 9, 34, 20, 49, 41. Give your answer to 2 decimal places

    Answer: 29.33