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Cornerstone May 23 - 29 25 questions
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Monday 23 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 14 + 78

    Answer: 98
  2. 2. Algebra

    Solve: 2x + 11 = 33

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 15cm

    Answer: 19.21cm
  4. 4. Ratio

    Divide 138 in the ratio 3:1:2

    Answer: 69, 23 and 46
  5. 5. Statistics

    Find the mean of: 19, 14, 17

    Answer: 16.666666666667

Tuesday 24 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 45 + 47

    Answer: 4835
  2. 2. Algebra

    Solve: 7x + 15 = 64

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 6cm

    Answer: 7.81cm
  4. 4. Ratio

    Share 55 in the ratio 1:4

    Answer: 11 and 44
  5. 5. Statistics

    Calculate the mean of: 18, 37, 40, 49, 36, 24, 25, 14

    Answer: 30.4

Wednesday 25 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 58 + 18

    Answer: 34
  2. 2. Algebra

    Solve: 6x - 13 = 29

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 44 in the ratio 3:1

    Answer: 33 and 11
  5. 5. Statistics

    Find the mean of: 14, 18, 4

    Answer: 12

Thursday 26 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 57 + 58

    Answer: 7556
  2. 2. Algebra

    Solve: 8x - 20 = 20

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio

    Share 80 in the ratio 3:2

    Answer: 48 and 32
  5. 5. Statistics

    Find the mean of: 7, 3, 5, 9, 13

    Answer: 7.4

Friday 27 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 411 + 111

    Answer: 511
  2. 2. Algebra

    Solve: 6x + 13 = 73

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Share 25 in the ratio 1:4

    Answer: 5 and 20
  5. 5. Statistics

    Calculate the mean of: 30, 27, 7, 28, 43, 13, 37

    Answer: 26.4