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Cornerstone Mar 23 - 29 25 questions
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Monday 23 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 5x + 13 = 43

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 112 in the ratio 2:1:1

    Answer: 56, 28 and 28
  5. 5. Statistics

    Find the mean of: 6, 6, 4, 4, 16

    Answer: 7.2

Tuesday 24 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄8 + 1⁄8

    Answer: 1⁄4
  2. 2. Algebra

    Solve: 7x + 11 = 95

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Share 140 in the ratio 4:3

    Answer: 80 and 60
  5. 5. Statistics

    Calculate the mean of: 19, 22, 37, 17, 28, 21, 19

    Answer: 23.3

Wednesday 25 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 6⁄8

    Answer: 23⁄20
  2. 2. Algebra

    Solve: 3x - 13 = 29

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 4cm

    Answer: 5.66cm
  4. 4. Ratio

    Share 77 in the ratio 3:4

    Answer: 33 and 44
  5. 5. Statistics

    Find the mean of: 14, 10, 10

    Answer: 11.333333333333

Thursday 26 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 5x - 5 = 25

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Share 36 in the ratio 1:2

    Answer: 12 and 24
  5. 5. Statistics

    Find the mean of: 13, 7, 20

    Answer: 13.333333333333

Friday 27 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄5 + 4⁄8

    Answer: 11⁄10
  2. 2. Algebra

    Solve: 2x + 7 = 19

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 13.45cm
  4. 4. Ratio

    Share 108 in the ratio 1:2

    Answer: 36 and 72
  5. 5. Statistics

    Calculate the mean of: 30, 41, 28, 5, 42, 37, 20, 28

    Answer: 28.9