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Cornerstone Jan 1 - 7 25 questions
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Monday 31 October 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 22 + 35

    Answer: 22 + 35 = 57
  2. 2. Algebra

    Find the next term: 15, 23, 31, 39, ...

    Answer: 47
  3. 3. Geometry

    Calculate the area of a circle with diameter 23cm

    Answer: 415.48cm²
  4. 4. Ratio

    Simplify: 4:6:10

    Answer: 2:3:5
  5. 5. Statistics

    Find the range of: 32, 7, 29, 22, 29

    Answer: 25

Tuesday 1 November 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4.7 + 7.9

    Answer: 4.7 + 7.9 = 12.6
  2. 2. Algebra

    Solve: x + 12 = 23

    Answer: x = 11
  3. 3. Geometry

    Opposite = 19cm, adjacent = 9cm. Calculate the angle

    Answer: 64.7°
  4. 4. Ratio

    Simplify: 6:10:6

    Answer: 3:5:3
  5. 5. Statistics

    Calculate the mean of: 32, 28, 11, 16, 43, 17, 37, 43

    Answer: 28.4

Wednesday 2 November 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 93 + ? = 130

    Answer: 37
  2. 2. Algebra

    Solve: x + 4 = 12

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Simplify: 6:12:18

    Answer: 1:2:3
  5. 5. Statistics

    Calculate the range of: 30, 72, 95, 38, 42, 32

    Answer: 65

Thursday 3 November 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 30 + 31

    Answer: 30 + 31 = 61
  2. 2. Algebra

    Solve: 3x = 12

    Answer: x = 4
  3. 3. Geometry

    Calculate the area of a circle with diameter 21cm

    Answer: 346.36cm²
  4. 4. Ratio

    Simplify: 8:24:16

    Answer: 1:3:2
  5. 5. Statistics

    Find the mean of: 5, 17, 18, 7, 8

    Answer: 11

Friday 4 November 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 24 × 25

    Answer: 29
  2. 2. Algebra

    Solve: 2x = 30

    Answer: x = 15
  3. 3. Geometry

    Calculate the distance between (5, 6) and (8, 10)

    Answer: 5
  4. 4. Ratio

    Simplify the ratio 30:15

    Answer: 2:1
  5. 5. Statistics

    Calculate the mean of: 49, 38, 22, 36, 23, 43

    Answer: 35.2