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Cornerstone Nov 17 - 23 25 questions
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Monday 17 November 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 7⁄8

    Answer: 29⁄24
  2. 2. Algebra

    Solve: 3x + 15 = 42

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Divide 98 in the ratio 1:2:4

    Answer: 14, 28 and 56
  5. 5. Statistics

    Calculate the mean of: 24, 6, 5, 17, 13, 5. Give your answer to 2 decimal places

    Answer: 11.67

Tuesday 18 November 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 2⁄7

    Answer: 13⁄21
  2. 2. Algebra

    Solve: 2x + 8 = 26

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 12.65cm
  4. 4. Ratio

    Divide 171 in the ratio 3:4:2

    Answer: 57, 76 and 38
  5. 5. Statistics

    Calculate the mean of: 27, 10, 42, 40, 31, 39, 42, 45

    Answer: 34.5

Wednesday 19 November 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄6 + 3⁄6

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 2x - 15 = 1

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.6cm
  4. 4. Ratio

    Divide 55 in the ratio 1:2:2

    Answer: 11, 22 and 22
  5. 5. Statistics

    Find the mean of: 2, 15, 14, 17, 17

    Answer: 13

Thursday 20 November 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 3⁄7

    Answer: 19⁄28
  2. 2. Algebra

    Solve: 7x - 18 = 52

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Divide 91 in the ratio 2:3:2

    Answer: 26, 39 and 26
  5. 5. Statistics

    Calculate the mean of: 22, 25, 25, 12, 32, 41, 13, 44

    Answer: 26.75

Friday 21 November 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 2x + 5 = 17

    Answer: x = 6
  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 150 in the ratio 2:2:1

    Answer: 60, 60 and 30
  5. 5. Statistics

    Find the mean of: 18, 13, 2, 2, 20

    Answer: 11