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Cornerstone Nov 29 - Dec 5 25 questions
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Monday 29 November 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄9 + 4⁄9

    Answer: 7⁄9
  2. 2. Algebra

    Solve: 5x + 6 = 36

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Share 91 in the ratio 3:4

    Answer: 39 and 52
  5. 5. Statistics

    Find the mean of: 15, 5, 9, 3, 2

    Answer: 6.8

Tuesday 30 November 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄11 + 2⁄11

    Answer: 8⁄11
  2. 2. Algebra

    Solve: 7x + 7 = 49

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 10cm

    Answer: 12.81cm
  4. 4. Ratio

    Share 42 in the ratio 2:1

    Answer: 28 and 14
  5. 5. Statistics

    Find the mean of: 7, 11, 7

    Answer: 8.3333333333333

Wednesday 1 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄6 + 1⁄7

    Answer: 13⁄42
  2. 2. Algebra

    Solve: 5x + 7 = 27

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 7cm

    Answer: 10.63cm
  4. 4. Ratio

    Share 40 in the ratio 2:3

    Answer: 16 and 24
  5. 5. Statistics

    Find the mean of: 10, 4, 4

    Answer: 6

Thursday 2 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 4x + 7 = 39

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio

    Share 54 in the ratio 1:2

    Answer: 18 and 36
  5. 5. Statistics

    Find the mean of: 12, 16, 14

    Answer: 14

Friday 3 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 1⁄7

    Answer: 25⁄28
  2. 2. Algebra

    Solve: 8x - 18 = 70

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 12.08cm
  4. 4. Ratio

    Share 50 in the ratio 1:4

    Answer: 10 and 40
  5. 5. Statistics

    Calculate the mean of: 41, 24, 34, 11, 40, 32, 12, 19

    Answer: 26.6