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Cornerstone Nov 9 - 15 25 questions
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Monday 9 November 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄10 + 2⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 5x + 11 = 31

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Share 77 in the ratio 3:4

    Answer: 33 and 44
  5. 5. Statistics

    Calculate the mean of: 42, 11, 15, 24, 18, 34, 50, 21

    Answer: 26.9

Tuesday 10 November 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄11 + 4⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 2x + 10 = 32

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 13cm

    Answer: 17.03cm
  4. 4. Ratio

    Share 45 in the ratio 4:1

    Answer: 36 and 9
  5. 5. Statistics

    Calculate the mean of: 21, 17, 10, 11, 20, 21

    Answer: 16.7

Wednesday 11 November 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 2⁄5

    Answer: 16⁄15
  2. 2. Algebra

    Solve: 4x - 11 = 17

    Answer: x = 7
  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

    Find the mean of: 5, 14, 13, 8, 20

    Answer: 12

Thursday 12 November 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄10 + 1⁄10

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 7x - 14 = 77

    Answer: x = 13
  3. 3. Geometry

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

    Answer: 10.44cm
  4. 4. Ratio

    Share 91 in the ratio 4:3

    Answer: 52 and 39
  5. 5. Statistics

    Find the mean of: 11, 18, 7

    Answer: 12

Friday 13 November 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄5 + 1⁄6

    Answer: 23⁄30
  2. 2. Algebra

    Solve: 5x + 11 = 41

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 76 in the ratio 1:3

    Answer: 19 and 57
  5. 5. Statistics

    Calculate the mean of: 18, 49, 39, 9, 16, 13, 15, 7

    Answer: 20.8