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Cornerstone Mar 2 - 8 25 questions
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Monday 2 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 3x - 15 = 30

    Answer: x = 15
  3. 3. Geometry

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

    Answer: 12.08cm
  4. 4. Ratio

    Divide 216 in the ratio 4:4:1

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

    Find the mean of: 20, 5, 17, 10, 9

    Answer: 12.2

Tuesday 3 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 5⁄8

    Answer: 9⁄8
  2. 2. Algebra

    Solve: 4x + 3 = 23

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Divide 198 in the ratio 4:4:1

    Answer: 88, 88 and 22
  5. 5. Statistics

    Calculate the mean of: 49, 9, 24, 48, 47, 39, 5

    Answer: 31.6

Wednesday 4 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 2⁄8

    Answer: 23⁄28
  2. 2. Algebra

    Solve: 2x + 10 = 32

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Share 60 in the ratio 2:1

    Answer: 40 and 20
  5. 5. Statistics

    Find the mean of: 11, 5, 9, 19, 17

    Answer: 12.2

Thursday 5 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 3x - 8 = 10

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 13cm

    Answer: 13.93cm
  4. 4. Ratio

    Share 20 in the ratio 1:3

    Answer: 5 and 15
  5. 5. Statistics

    Calculate the mean of: 18, 26, 26, 22, 10, 50

    Answer: 25.3

Friday 6 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄6 + 2⁄3

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 2x - 15 = -3

    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 2:3

    Answer: 32 and 48
  5. 5. Statistics

    Calculate the mean of: 29, 25, 39, 35, 37, 18

    Answer: 30.5