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Cornerstone Dec 31 - Jan 6 25 questions
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Monday 31 December 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 5⁄7

    Answer: 32⁄35
  2. 2. Algebra

    Solve: 8x - 18 = 14

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Share 56 in the ratio 1:3

    Answer: 14 and 42
  5. 5. Statistics

    Calculate the mean of: 16, 17, 9, 20, 35, 9

    Answer: 17.7

Tuesday 1 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 3⁄5

    Answer: 49⁄40
  2. 2. Algebra

    Solve: 6x + 8 = 74

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics

    Find the mean of: 5, 12, 17, 12

    Answer: 11.5

Wednesday 2 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄7 + 4⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 4x + 5 = 29

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 13cm

    Answer: 17.03cm
  4. 4. Ratio

    Share 90 in the ratio 4:1

    Answer: 72 and 18
  5. 5. Statistics

    Find the mean of: 5, 15, 19, 14

    Answer: 13.25

Thursday 3 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 4⁄7

    Answer: 23⁄28
  2. 2. Algebra

    Solve: 7x - 7 = 28

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 9cm

    Answer: 9.85cm
  4. 4. Ratio

    Share 63 in the ratio 3:4

    Answer: 27 and 36
  5. 5. Statistics

    Calculate the mean of: 30, 45, 44, 44, 20, 43

    Answer: 37.7

Friday 4 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 1⁄6

    Answer: 31⁄42
  2. 2. Algebra

    Solve: 6x - 5 = 61

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Divide 147 in the ratio 4:1:2

    Answer: 84, 21 and 42
  5. 5. Statistics

    Find the mean of: 17, 5, 19, 15, 11

    Answer: 13.4