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Cornerstone Jan 1 - 7 25 questions
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Monday 13 May 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 46 + 22

    Answer: 46 + 22 = 68
  2. 2. Algebra

    Solve: x + 15 = 18

    Answer: x = 3
  3. 3. Geometry

    Calculate perimeter: two sides are 11cm and 7cm at right angles

    Answer: 31cm
  4. 4. Ratio

    Simplify: 12:18:6

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

    Calculate the mean of: 50, 29, 9, 17, 30, 45, 29

    Answer: 29.9

Tuesday 14 May 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 24 + 45

    Answer: 24 + 45 = 69
  2. 2. Algebra

    Solve: x + 6 = 23

    Answer: x = 17
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 14cm

    Answer: 18.44cm
  4. 4. Ratio

    Simplify the ratio 10:35

    Answer: 2:7
  5. 5. Statistics

    Find the range of: 27, 20, 15, 25, 16

    Answer: 12

Wednesday 15 May 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 54 + ? = 170

    Answer: 116
  2. 2. Algebra

    Factorise: 8x² + 9x

    Answer: x(8x + 9)
  3. 3. Geometry

    Find the area of a circle with radius 5cm

    Answer: 78.54cm²
  4. 4. Ratio

    Simplify the ratio 12:28

    Answer: 3:7
  5. 5. Statistics

    Calculate the mean of: 24, 32, 20, 22, 24, 42, 32

    Answer: 28

Thursday 16 May 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is √36?

    Answer: 6
  2. 2. Algebra

    What is the next term? 2, 6, 18, 54, ...

    Answer: 162
  3. 3. Geometry

    Opposite = 18cm, adjacent = 10cm. Calculate the angle

    Answer: 60.9°
  4. 4. Ratio

    Simplify the ratio 24:21

    Answer: 8:7
  5. 5. Statistics

    Calculate the mean of: 43, 31, 40, 49, 10, 50, 46

    Answer: 38.4

Friday 17 May 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 161 + 171

    Answer: 161 + 171 = 332
  2. 2. Algebra

    Factorise: 9x + 18

    Answer: 3(3x + 6)
  3. 3. Geometry

    Opposite = 14cm, hypotenuse = 28cm. Find the angle

    Answer: 30° (approximately)
  4. 4. Ratio

    Simplify the ratio 24:12

    Answer: 2:1
  5. 5. Statistics

    Find the mean of: 2, 20, 8

    Answer: 10