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Cornerstone Oct 13 - 19 25 questions
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Monday 13 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄10 + 2⁄10

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 5x - 11 = 19

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.34cm
  4. 4. Ratio

    Divide 70 in the ratio 1:3:3

    Answer: 10, 30 and 30
  5. 5. Statistics

    Find the mean of: 19, 13, 8, 8

    Answer: 12

Tuesday 14 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄10 + 4⁄10

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 7x - 6 = 99

    Answer: x = 15
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Share 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics

    Calculate the mean of: 31, 29, 30, 11, 39, 39, 19, 38

    Answer: 29.5

Wednesday 15 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄7 + 2⁄3

    Answer: 17⁄21
  2. 2. Algebra

    Solve: 4x + 7 = 19

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 52 in the ratio 3:1

    Answer: 39 and 13
  5. 5. Statistics

    Find the mean of: 2, 24, 13

    Answer: 13

Thursday 16 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄9 + 3⁄9

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 7x + 4 = 60

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 14.76cm
  4. 4. Ratio

    Share 25 in the ratio 3:2

    Answer: 15 and 10
  5. 5. Statistics

    Find the mean of: 7, 15, 15, 10, 3

    Answer: 10

Friday 17 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 3⁄4

    Answer: 23⁄20
  2. 2. Algebra

    Solve: 6x - 13 = 77

    Answer: x = 15
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 30 in the ratio 2:3

    Answer: 12 and 18
  5. 5. Statistics

    Calculate the mean of: 29, 26, 28, 25, 38, 36, 33. Give your answer to 2 decimal places

    Answer: 30.71