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Lintel Jan 1 - 7 25 questions
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Monday 17 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 84 + ? = 184

    Answer: 100
  2. 2. Algebra

    Solve: 8x - 9 = 6x + -1

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 45°
  4. 4. Ratio

    Simplify the ratio 5m:500cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 3 red, 5 blue and 5 green sections. Probability of landing on red?

    Answer: 313

Tuesday 18 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 607 + 622

    Answer: 607 + 622 = 1229
  2. 2. Algebra

    Factorise: 8x² + 2x

    Answer: 2x(4x + 1)
  3. 3. Geometry

    Opposite = 17cm, adjacent = 9cm. Calculate the angle

    Answer: 62.1°
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    Find the range of: 23, -17, 9, 16, -3

    Answer: 40

Wednesday 19 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 117. What are the numbers?

    Answer: 38, 39, and 40
  2. 2. Algebra

    Factorise fully: 24x² + 8x

    Answer: 4x(6x + 2)
  3. 3. Geometry

    Adjacent = 26cm, hypotenuse = 32cm. Find the angle

    Answer: 35.7°
  4. 4. Ratio

    Calculate 14.3% of 226

    Answer: 32.32
  5. 5. Statistics

    A bag has 6 red and 4 blue balls. What is the probability of picking a red ball?

    Answer: 35

Thursday 20 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Find the total of 227, 208, and 73

    Answer: 508
  2. 2. Algebra

    Factorise fully: 24x² + 16x

    Answer: 4x(6x + 4)
  3. 3. Geometry

    Calculate the distance between (7, 1) and (10, 5)

    Answer: 5
  4. 4. Ratio

    Calculate 18.8% of 778

    Answer: 146.26
  5. 5. Statistics

    Find the range of: 25, -29, -29, -17, 30

    Answer: 59

Friday 21 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 117. What are the numbers?

    Answer: 38, 39, and 40
  2. 2. Algebra

    Solve: 2x = 22

    Answer: x = 11
  3. 3. Geometry

    A circle has area 314.2cm². Find its radius (dp)

    Answer: 10cm
  4. 4. Ratio

    Calculate 23.9% of 665

    Answer: 158.94
  5. 5. Statistics

    A bag has 3 red and 6 blue balls. What is the probability of picking a red ball?

    Answer: 13