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Cornerstone May 4 - 10 25 questions
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Monday 4 May 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 3x + 6 = 42

    Answer: x = 12
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio

    Divide 52 in the ratio 2:1:1

    Answer: 26, 13 and 13
  5. 5. Statistics

    Calculate the mean of: 45, 38, 22, 18, 35, 38, 33

    Answer: 32.7

Tuesday 5 May 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 2⁄3

    Answer: 23⁄21
  2. 2. Algebra

    Solve: 8x - 13 = 91

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 9cm

    Answer: 15cm
  4. 4. Ratio

    Divide 216 in the ratio 3:4:1

    Answer: 81, 108 and 27
  5. 5. Statistics

    Find the mean of: 9, 7, 16, 15

    Answer: 11.75

Wednesday 6 May 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 2⁄8

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 5x - 19 = 21

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 162 in the ratio 3:2:1

    Answer: 81, 54 and 27
  5. 5. Statistics

    Find the mean of: 15, 19, 2, 14, 12

    Answer: 12.4

Thursday 7 May 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 2⁄5

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 6x + 12 = 78

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 9cm

    Answer: 10.82cm
  4. 4. Ratio

    Divide 168 in the ratio 1:4:2

    Answer: 24, 96 and 48
  5. 5. Statistics

    Calculate the mean of: 37, 41, 11, 14, 14, 21

    Answer: 23

Friday 8 May 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 4⁄5

    Answer: 31⁄20
  2. 2. Algebra

    Solve: 7x + 14 = 63

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 13.6cm
  4. 4. Ratio

    Divide 253 in the ratio 4:3:4

    Answer: 92, 69 and 92
  5. 5. Statistics

    Calculate the mean of: 17, 18, 42, 24, 20, 30, 37, 8

    Answer: 24.5