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Cornerstone Sep 28 - Oct 4 25 questions
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Monday 28 September 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 2⁄3

    Answer: 16⁄15
  2. 2. Algebra

    Solve: 7x + 12 = 89

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 25 in the ratio 2:3

    Answer: 10 and 15
  5. 5. Statistics

    Find the mean of: 17, 13, 6, 4

    Answer: 10

Tuesday 29 September 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄8 + 2⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 6x - 19 = 41

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 11cm

    Answer: 13.6cm
  4. 4. Ratio

    Share 126 in the ratio 3:4

    Answer: 54 and 72
  5. 5. Statistics

    Calculate the mean of: 33, 20, 15, 7, 17, 42

    Answer: 22.3

Wednesday 30 September 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄11 + 3⁄11

    Answer: 7⁄11
  2. 2. Algebra

    Solve: 3x - 12 = 18

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Share 48 in the ratio 1:2

    Answer: 16 and 32
  5. 5. Statistics

    Calculate the mean of: 11, 17, 46, 11, 17, 36

    Answer: 23

Thursday 1 October 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 7x - 20 = 8

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 56 in the ratio 4:3

    Answer: 32 and 24
  5. 5. Statistics

    Find the mean of: 8, 2, 19

    Answer: 9.6666666666667

Friday 2 October 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 1⁄6

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 4x - 9 = 51

    Answer: x = 15
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 12cm

    Answer: 15.62cm
  4. 4. Ratio

    Share 133 in the ratio 3:4

    Answer: 57 and 76
  5. 5. Statistics

    Find the mean of: 17, 8, 5

    Answer: 10