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Lintel May 7 - 13 25 questions
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Monday 4 May 2026

Keystones #124 · Five questions · Open this day only

  1. 1. Number

    Find the total of 152, 253, and 54

    Answer: 459
  2. 2. Algebra

    Factorise: 6x² + 3x

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

    Opposite = 9cm, adjacent = 10cm. Calculate the angle

    Answer: 42°
  4. 4. Ratio

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics

    Find the range of: 23, -27, 50, 50, 39

    Answer: 77

Tuesday 5 May 2026

Keystones #125 · Five questions · Open this day only

  1. 1. Number

    Calculate: 999 + 640

    Answer: 1639
  2. 2. Algebra

    Solve: x⁄5 = 1.8

    Answer: x = 9
  3. 3. Geometry

    Adjacent = 16cm, hypotenuse = 36cm. Find the angle

    Answer: 63.6°
  4. 4. Ratio

    Simplify the ratio 5m:500cm

    Answer: 1:100
  5. 5. Statistics

    A bag has 5 red and 5 blue balls. What is the probability of picking a red ball?

    Answer: 1⁄2

Wednesday 6 May 2026

Keystones #126 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 48 + ? = 135

    Answer: 87
  2. 2. Algebra

    Factorise fully: 18x² + 15x

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

    Calculate the distance between (10, 6) and (13, 10)

    Answer: 5
  4. 4. Ratio

    Simplify the ratio 5m:500cm

    Answer: 1:100
  5. 5. Statistics

    A bag has 6 red and 5 blue balls. What is the probability of picking a red ball?

    Answer: 6⁄11

Thursday 7 May 2026

Keystones #127 · Five questions · Open this day only

  1. 1. Number

    Simplify: y5 × y2 × y5

    Answer: y12
  2. 2. Algebra

    What is the next term? 4, 12, 36, 108, ...

    Answer: 324
  3. 3. Geometry

    Find the distance between (-2, -4) and (7, 11)

    Answer: 17.49
  4. 4. Ratio

    Calculate 26.7% of 235

    Answer: 62.75
  5. 5. Statistics

    Find the range of: 4, -12, 13, 20, 10

    Answer: 32

Friday 8 May 2026

Keystones #128 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 123. What are the numbers?

    Answer: 40, 41, and 42
  2. 2. Algebra

    Factorise: 8x² + 5x

    Answer: x(8x + 5)
  3. 3. Geometry

    Adjacent = 20cm, hypotenuse = 39cm. Find the angle

    Answer: 59.1°
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 4 red, 2 blue and 6 green sections. Probability of landing on red?

    Answer: 1⁄3