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Lintel Jan 1 - 7 25 questions
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Monday 3 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 514 + 798

    Answer: 514 + 798 = 1312
  2. 2. Algebra

    Solve: x8 = 2.125

    Answer: x = 17
  3. 3. Geometry

    Adjacent = 23cm, hypotenuse = 31cm. Find the angle

    Answer: 42.1°
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

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

    Answer: 411

Tuesday 4 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 13 + 14

    Answer: 712
  2. 2. Algebra

    Solve: 4x + 4 = 3x - 2

    Answer: x = 6
  3. 3. Geometry

    A circle has area 254.5cm². Find its radius (dp)

    Answer: 9cm
  4. 4. Ratio

    Find 75% of 302

    Answer: 226.5
  5. 5. Statistics

    Find the range of: -6, 41, -19, 41, -28

    Answer: 69

Wednesday 5 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 998 + 780

    Answer: 1778
  2. 2. Algebra

    Factorise: 4x² + 9x

    Answer: x(4x + 9)
  3. 3. Geometry

    Opposite = 10cm, adjacent = 16cm. Calculate the angle

    Answer: 32°
  4. 4. Ratio

    Simplify: 12:6:12

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

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

    Answer: 411

Thursday 6 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 23 + 34

    Answer: 1712
  2. 2. Algebra

    Solve: 2x = 30

    Answer: x = 15
  3. 3. Geometry

    Adjacent = 28cm, hypotenuse = 48cm. Find the angle

    Answer: 54.3°
  4. 4. Ratio

    Simplify: 24:12:16

    Answer: 6:3:4
  5. 5. Statistics

    A bag has 5 red and 8 blue balls. What is the probability of picking a red ball?

    Answer: 513

Friday 7 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: 3x + 4 = x - 6

    Answer: x = 5
  3. 3. Geometry

    Opposite = 19cm, adjacent = 17cm. Calculate the angle

    Answer: 48.2°
  4. 4. Ratio

    Find 54% of 309

    Answer: 166.86
  5. 5. Statistics

    Find the range of: 43, 25, -16, 26, 44

    Answer: 60