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Cornerstone Jan 1 - 7 25 questions
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Monday 25 March 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 51 + 59

    Answer: 51 + 59 = 110
  2. 2. Algebra

    Factorise: 15x + 18

    Answer: 3(5x + 6)
  3. 3. Geometry

    Find the area of a circle with radius 5cm

    Answer: 78.54cm²
  4. 4. Ratio

    Simplify the ratio 25:35

    Answer: 5:7
  5. 5. Statistics

    Calculate the range of: 65, 81, 45, 72, 68, 99

    Answer: 54

Tuesday 26 March 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 53 + ? = 159

    Answer: 106
  2. 2. Algebra

    Solve: x + 10 = 25

    Answer: x = 15
  3. 3. Geometry

    Opposite = 17cm, adjacent = 20cm. Calculate the angle

    Answer: 40.4°
  4. 4. Ratio

    Simplify the ratio 6:21

    Answer: 2:7
  5. 5. Statistics

    Calculate the mean of: 16, 6, 38, 27, 25, 21

    Answer: 22.2

Wednesday 27 March 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 77 + 25

    Answer: 77 + 25 = 102
  2. 2. Algebra

    For y = x³ + 14, calculate y when x = 2

    Answer: y = 22
  3. 3. Geometry

    Find the area of a circle with radius 5cm

    Answer: 78.54cm²
  4. 4. Ratio

    Calculate 25% of 67

    Answer: 16.75
  5. 5. Statistics

    Find the range of: 19, 43, 20, 26, 23

    Answer: 24

Thursday 28 March 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 77 + 39

    Answer: 77 + 39 = 116
  2. 2. Algebra

    What is the next term? 7, 21, 63, 189, ...

    Answer: 567
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Simplify the ratio 10:14

    Answer: 5:7
  5. 5. Statistics

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

    Answer: 9.25

Friday 29 March 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is ∛125?

    Answer: 5
  2. 2. Algebra

    Solve: x + 13 = 33

    Answer: x = 20
  3. 3. Geometry

    Calculate the area of a circle with diameter 14cm

    Answer: 153.94cm²
  4. 4. Ratio

    Simplify the ratio 21:24

    Answer: 7:8
  5. 5. Statistics

    Calculate the range of: 87, 105, 26, 47, 42, 57

    Answer: 79