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Cornerstone Jan 25 - 31 25 questions
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Monday 25 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄9 + 1⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 5x + 10 = 35

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio

    Divide 133 in the ratio 3:2:2

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

    Find the mean of: 15, 10, 8

    Answer: 11

Tuesday 26 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄8 + 2⁄5

    Answer: 21⁄40
  2. 2. Algebra

    Solve: 4x + 3 = 51

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 14.42cm
  4. 4. Ratio

    Divide 200 in the ratio 1:1:2

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

    Find the mean of: 20, 11, 6, 11

    Answer: 12

Wednesday 27 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄12 + 1⁄12

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 8x - 5 = 115

    Answer: x = 15
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Divide 100 in the ratio 3:4:3

    Answer: 30, 40 and 30
  5. 5. Statistics

    Calculate the mean of: 40, 12, 9, 27, 46, 42. Give your answer to 2 decimal places

    Answer: 29.33

Thursday 28 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄7 + 3⁄7

    Answer: 4⁄7
  2. 2. Algebra

    Solve: 2x - 13 = -5

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Divide 156 in the ratio 3:2:1

    Answer: 78, 52 and 26
  5. 5. Statistics

    Calculate the mean of: 16, 9, 24, 47, 10, 29, 16. Give your answer to 2 decimal places

    Answer: 21.57

Friday 29 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 4⁄8

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 6x + 10 = 52

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 7.81cm
  4. 4. Ratio

    Divide 112 in the ratio 1:2:4

    Answer: 16, 32 and 64
  5. 5. Statistics

    Find the mean of: 3, 2, 13

    Answer: 6