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Cornerstone Jul 24 - 30 25 questions
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Monday 24 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄7 + 2⁄6

    Answer: 25⁄21
  2. 2. Algebra

    Solve: 6x - 18 = 48

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio

    Share 80 in the ratio 3:1

    Answer: 60 and 20
  5. 5. Statistics

    Find the mean of: 19, 15, 8, 6

    Answer: 12

Tuesday 25 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄9 + 3⁄9

    Answer: 5⁄9
  2. 2. Algebra

    Solve: 3x + 5 = 23

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Share 28 in the ratio 1:3

    Answer: 7 and 21
  5. 5. Statistics

    Calculate the mean of: 49, 8, 48, 9, 10, 8

    Answer: 22

Wednesday 26 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 1⁄3

    Answer: 7⁄12
  2. 2. Algebra

    Solve: 5x + 9 = 44

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio

    Share 85 in the ratio 3:2

    Answer: 51 and 34
  5. 5. Statistics

    Calculate the mean of: 41, 50, 8, 6, 16, 38, 47, 36

    Answer: 30.25

Thursday 27 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄9 + 1⁄9

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 2x - 18 = 0

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 33 in the ratio 1:2

    Answer: 11 and 22
  5. 5. Statistics

    Find the mean of: 10, 5, 13, 4, 18

    Answer: 10

Friday 28 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄12 + 5⁄12

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 7x - 15 = 55

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 13.89cm
  4. 4. Ratio

    Share 48 in the ratio 1:3

    Answer: 12 and 36
  5. 5. Statistics

    Find the mean of: 21, 7, 17

    Answer: 15