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Lintel Jan 1 - 7 25 questions
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Monday 10 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 78 + ? = 100

    Answer: 22
  2. 2. Algebra

    Solve: 9x = 36

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 13cm

    Answer: 16.4cm
  4. 4. Ratio

    Simplify: 12:8:12

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

    Calculate the mean of: 46, 34, 25, 35, 42, 8, 32, 30

    Answer: 31.5

Tuesday 11 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 135. What are the numbers?

    Answer: 44, 45, and 46
  2. 2. Algebra

    Find the next term: 1, 3, 7, 13, ...

    Answer: 21
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Simplify: 6:12:18

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

    A spinner has 6 red, 4 blue and 3 green sections. Probability of landing on red?

    Answer: 613

Wednesday 12 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 36 + 34

    Answer: 54
  2. 2. Algebra

    Solve: x7 = 5

    Answer: x = 35
  3. 3. Geometry

    Calculate the area of a circle with diameter 11cm

    Answer: 95.03cm²
  4. 4. Ratio

    Simplify: 12:15:15

    Answer: 4:5:5
  5. 5. Statistics

    A spinner has 6 red, 5 blue and 6 green sections. Probability of landing on red?

    Answer: 617

Thursday 13 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 993 + 565

    Answer: 1558
  2. 2. Algebra

    Expand: 3(6x + 2)

    Answer: 18x + 6
  3. 3. Geometry

    Find the perimeter: hypotenuse = 15cm, one side = 11cm

    Answer: 36.2cm
  4. 4. Ratio

    Simplify: 10:6:12

    Answer: 5:3:6
  5. 5. Statistics

    Calculate the mean of: 39, 7, 50, 43, 26, 40, 10, 25

    Answer: 30

Friday 14 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 56 + 25 + 45

    Answer: 6130
  2. 2. Algebra

    Solve: 6x = 60

    Answer: x = 10
  3. 3. Geometry

    Adjacent = 15cm, hypotenuse = 31cm. Find the angle

    Answer: 61.1°
  4. 4. Ratio

    Calculate 28.9% of 943

    Answer: 272.53
  5. 5. Statistics

    A spinner has 6 red, 3 blue and 6 green sections. Probability of landing on red?

    Answer: 25