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Lintel Jan 1 - 7 25 questions
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Monday 12 May 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 12 + 24 + 25

    Answer: 75
  2. 2. Algebra

    Solve: 5x - 12 = 2x + 6

    Answer: x = 6
  3. 3. Geometry

    Opposite = 20cm, adjacent = 15cm. Calculate the angle

    Answer: 53.1°
  4. 4. Ratio

    Simplify: 12:8:8

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

    A bag has 7 red and 8 blue balls. What is the probability of picking a red ball?

    Answer: 715

Tuesday 13 May 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 858 + 808

    Answer: 858 + 808 = 1666
  2. 2. Algebra

    Simplify: 12x - 11x + 10y - 3y

    Answer: x + 7y
  3. 3. Geometry

    Find c if a = 13cm and b = 22cm in a right triangle

    Answer: 25.6cm
  4. 4. Ratio

    Simplify: 15:9:6

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

    Find the range of: 24, 43, 10, -17, 44

    Answer: 61

Wednesday 14 May 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Find the total of 276, 283, and 83

    Answer: 642
  2. 2. Algebra

    Solve: x2 = 5

    Answer: x = 10
  3. 3. Geometry

    Adjacent = 12cm, hypotenuse = 26cm. Find the angle

    Answer: 62.5°
  4. 4. Ratio

    Simplify the ratio 3m:300cm

    Answer: 1:100
  5. 5. Statistics

    A bag has 7 red and 4 blue balls. What is the probability of picking a red ball?

    Answer: 711

Thursday 15 May 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 992 + 855

    Answer: 1847
  2. 2. Algebra

    Solve: 8x = 56

    Answer: x = 7
  3. 3. Geometry

    Opposite = 12cm, adjacent = 9cm. Calculate the angle

    Answer: 53.1°
  4. 4. Ratio

    Simplify the ratio 5m:500cm

    Answer: 1:100
  5. 5. Statistics

    Find the range of: -30, 10, 34, 34, 1

    Answer: 64

Friday 16 May 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 31 + ? = 167

    Answer: 136
  2. 2. Algebra

    What is the next term? 5, 20, 80, 320, ...

    Answer: 1280
  3. 3. Geometry

    Adjacent = 15cm, hypotenuse = 23cm. Find the angle

    Answer: 49.3°
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

    Find the range of: 42, -27, -27, 26, 32

    Answer: 69