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Cornerstone Jun 29 - Jul 5 25 questions
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Monday 29 June 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 1⁄3

    Answer: 7⁄12
  2. 2. Algebra

    Solve: 8x - 7 = 97

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 15cm

    Answer: 17.49cm
  4. 4. Ratio

    Share 140 in the ratio 4:3

    Answer: 80 and 60
  5. 5. Statistics

    Calculate the mean of: 46, 47, 6, 35, 46, 39

    Answer: 36.5

Tuesday 30 June 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 3⁄8

    Answer: 31⁄40
  2. 2. Algebra

    Solve: 8x - 9 = 39

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio

    Share 54 in the ratio 1:2

    Answer: 18 and 36
  5. 5. Statistics

    Calculate the mean of: 25, 6, 40, 30, 13, 17, 23

    Answer: 22

Wednesday 1 July 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄10 + 3⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 3x + 8 = 26

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 10cm

    Answer: 13.45cm
  4. 4. Ratio

    Share 21 in the ratio 1:2

    Answer: 7 and 14
  5. 5. Statistics

    Calculate the mean of: 38, 14, 35, 43, 40, 26, 36

    Answer: 33.1

Thursday 2 July 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄7 + 5⁄6

    Answer: 47⁄42
  2. 2. Algebra

    Solve: 7x + 6 = 90

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Share 84 in the ratio 3:4

    Answer: 36 and 48
  5. 5. Statistics

    Calculate the mean of: 7, 49, 21, 47, 38, 8, 28, 26

    Answer: 28

Friday 3 July 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄7 + 5⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 8x - 16 = 72

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 10cm

    Answer: 10.44cm
  4. 4. Ratio

    Share 18 in the ratio 2:1

    Answer: 12 and 6
  5. 5. Statistics

    Find the mean of: 20, 14, 16

    Answer: 16.666666666667