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Cornerstone Jan 14 - 20 25 questions
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Monday 14 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄7 + 2⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 6x + 13 = 37

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 35 in the ratio 3:4

    Answer: 15 and 20
  5. 5. Statistics

    Find the mean of: 9, 15, 11, 17

    Answer: 13

Tuesday 15 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 2⁄3

    Answer: 26⁄21
  2. 2. Algebra

    Solve: 3x - 17 = 22

    Answer: x = 13
  3. 3. Geometry

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

    Answer: 16.97cm
  4. 4. Ratio

    Share 77 in the ratio 4:3

    Answer: 44 and 33
  5. 5. Statistics

    Calculate the mean of: 24, 11, 11, 43, 12, 35, 40, 41

    Answer: 27.1

Wednesday 16 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄11 + 2⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 8x - 19 = 29

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Share 80 in the ratio 3:2

    Answer: 48 and 32
  5. 5. Statistics

    Calculate the mean of: 40, 30, 50, 19, 50, 32, 49

    Answer: 38.6

Thursday 17 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄5 + 1⁄3

    Answer: 14⁄15
  2. 2. Algebra

    Solve: 6x + 9 = 39

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 15cm

    Answer: 18.03cm
  4. 4. Ratio

    Share 51 in the ratio 1:2

    Answer: 17 and 34
  5. 5. Statistics

    Find the mean of: 6, 19, 6, 2, 4

    Answer: 7.4

Friday 18 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 2⁄7

    Answer: 47⁄42
  2. 2. Algebra

    Solve: 4x + 11 = 39

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 11cm

    Answer: 12.08cm
  4. 4. Ratio

    Share 36 in the ratio 1:2

    Answer: 12 and 24
  5. 5. Statistics

    Find the mean of: 13, 11, 19, 13

    Answer: 14