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Cornerstone Apr 5 - 11 25 questions
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Monday 5 April 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄12 + 3⁄12

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 5x + 7 = 27

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 15cm

    Answer: 16.16cm
  4. 4. Ratio

    Share 42 in the ratio 1:2

    Answer: 14 and 28
  5. 5. Statistics

    Find the mean of: 4, 13, 18, 18, 19

    Answer: 14.4

Tuesday 6 April 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄7 + 3⁄4

    Answer: 45⁄28
  2. 2. Algebra

    Solve: 7x + 6 = 62

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio

    Share 55 in the ratio 3:2

    Answer: 33 and 22
  5. 5. Statistics

    Find the mean of: 12, 7, 7

    Answer: 8.6666666666667

Wednesday 7 April 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄6 + 2⁄4

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 8x - 8 = 32

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 5cm

    Answer: 8.6cm
  4. 4. Ratio

    Share 105 in the ratio 4:3

    Answer: 60 and 45
  5. 5. Statistics

    Calculate the mean of: 12, 16, 13, 50, 34, 16

    Answer: 23.5

Thursday 8 April 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄9 + 2⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 4x - 12 = 44

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 5cm

    Answer: 6.4cm
  4. 4. Ratio

    Share 27 in the ratio 2:1

    Answer: 18 and 9
  5. 5. Statistics

    Calculate the mean of: 46, 38, 21, 24, 21, 10, 33

    Answer: 27.6

Friday 9 April 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 1⁄3

    Answer: 7⁄12
  2. 2. Algebra

    Solve: 6x + 15 = 45

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 80 in the ratio 1:4

    Answer: 16 and 64
  5. 5. Statistics

    Find the mean of: 18, 10, 8

    Answer: 12