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Cornerstone Dec 21 - 27 25 questions
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Monday 21 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄6 + 2⁄7

    Answer: 19⁄42
  2. 2. Algebra

    Solve: 6x + 12 = 78

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 120 in the ratio 2:1

    Answer: 80 and 40
  5. 5. Statistics

    Find the mean of: 17, 7, 19, 5

    Answer: 12

Tuesday 22 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄9 + 1⁄9

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 2x + 4 = 26

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio

    Share 42 in the ratio 2:1

    Answer: 28 and 14
  5. 5. Statistics

    Find the mean of: 13, 5, 22, 12

    Answer: 13

Wednesday 23 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 1⁄3

    Answer: 13⁄12
  2. 2. Algebra

    Solve: 6x - 6 = 30

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio

    Share 24 in the ratio 1:3

    Answer: 6 and 18
  5. 5. Statistics

    Calculate the mean of: 23, 34, 22, 46, 22, 45

    Answer: 32

Thursday 24 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 2⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 7x - 20 = 57

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Divide 126 in the ratio 2:3:1

    Answer: 42, 63 and 21
  5. 5. Statistics

    Find the mean of: 3, 4, 11, 14

    Answer: 8

Friday 25 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 4x + 12 = 44

    Answer: x = 8
  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

    Divide 90 in the ratio 3:1:2

    Answer: 45, 15 and 30
  5. 5. Statistics

    Calculate the mean of: 46, 32, 39, 25, 33, 25. Give your answer to 2 decimal places

    Answer: 33.33