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Cornerstone Jul 8 - 14 25 questions
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Monday 8 July 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄8 + 2⁄5

    Answer: 21⁄40
  2. 2. Algebra

    Solve: 7x - 16 = 12

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 10cm

    Answer: 12.21cm
  4. 4. Ratio

    Share 45 in the ratio 2:1

    Answer: 30 and 15
  5. 5. Statistics

    Calculate the mean of: 21, 10, 12, 25, 50, 29, 17

    Answer: 23.4

Tuesday 9 July 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄10 + 1⁄10

    Answer: 7⁄10
  2. 2. Algebra

    Solve: 4x + 13 = 33

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 35 in the ratio 3:4

    Answer: 15 and 20
  5. 5. Statistics

    Find the mean of: 10, 19, 19, 13, 18

    Answer: 15.8

Wednesday 10 July 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄11 + 6⁄11

    Answer: 7⁄11
  2. 2. Algebra

    Solve: 4x + 9 = 33

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio

    Share 84 in the ratio 3:4

    Answer: 36 and 48
  5. 5. Statistics

    Find the mean of: 10, 4, 7

    Answer: 7

Thursday 11 July 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 1⁄4

    Answer: 19⁄28
  2. 2. Algebra

    Solve: 2x - 7 = 21

    Answer: x = 14
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Share 15 in the ratio 2:1

    Answer: 10 and 5
  5. 5. Statistics

    Calculate the mean of: 14, 42, 16, 7, 16, 18

    Answer: 18.8

Friday 12 July 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄11 + 1⁄11

    Answer: 8⁄11
  2. 2. Algebra

    Solve: 4x - 6 = 14

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 13.45cm
  4. 4. Ratio

    Share 24 in the ratio 3:1

    Answer: 18 and 6
  5. 5. Statistics

    Calculate the mean of: 30, 37, 30, 19, 38, 28

    Answer: 30.3