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Cornerstone May 18 - 24 25 questions
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Monday 18 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: 6x - 5 = 43

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 9cm

    Answer: 13.45cm
  4. 4. Ratio

    Share 75 in the ratio 4:1

    Answer: 60 and 15
  5. 5. Statistics

    Calculate the mean of: 14, 31, 31, 44, 9, 46, 32

    Answer: 29.6

Tuesday 19 May 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 1⁄7

    Answer: 10⁄21
  2. 2. Algebra

    Solve: 2x + 10 = 22

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Share 63 in the ratio 3:4

    Answer: 27 and 36
  5. 5. Statistics

    Find the mean of: 6, 14, 14, 4

    Answer: 9.5

Wednesday 20 May 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄7 + 3⁄7

    Answer: 4⁄7
  2. 2. Algebra

    Solve: 2x + 5 = 27

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 13cm

    Answer: 13.6cm
  4. 4. Ratio

    Share 45 in the ratio 2:3

    Answer: 18 and 27
  5. 5. Statistics

    Calculate the mean of: 10, 26, 46, 16, 42, 10, 32, 45

    Answer: 28.4

Thursday 21 May 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄7 + 3⁄8

    Answer: 61⁄56
  2. 2. Algebra

    Solve: 8x - 14 = 98

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 60 in the ratio 1:4

    Answer: 12 and 48
  5. 5. Statistics

    Find the mean of: 5, 20, 6

    Answer: 10.333333333333

Friday 22 May 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄12 + 1⁄12

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 5x - 18 = 57

    Answer: x = 15
  3. 3. Geometry

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

    Answer: 6.4cm
  4. 4. Ratio

    Share 100 in the ratio 2:3

    Answer: 40 and 60
  5. 5. Statistics

    Find the mean of: 15, 17, 16, 12

    Answer: 15