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Lintel May 28 - Jun 3 25 questions
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Monday 25 May 2026

Keystones #145 · Five questions · Open this day only

  1. 1. Number

    Calculate: 828 + 127

    Answer: 828 + 127 = 955
  2. 2. Algebra

    Solve: x⁄3 = 8

    Answer: x = 24
  3. 3. Geometry

    Adjacent = 24cm, hypotenuse = 31cm. Find the angle

    Answer: 39.3°
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

    Find the range of: -17, 12, 43, -14, -8

    Answer: 60

Tuesday 26 May 2026

Keystones #146 · Five questions · Open this day only

  1. 1. Number

    Calculate: 990 + 716

    Answer: 1706
  2. 2. Algebra

    Solve: x⁄6 = 3.8333333333333

    Answer: x = 23
  3. 3. Geometry

    Opposite = 15cm, adjacent = 14cm. Calculate the angle

    Answer: 47°
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

    Find the range of: -29, 36, -29, 44, -22

    Answer: 73

Wednesday 27 May 2026

Keystones #147 · Five questions · Open this day only

  1. 1. Number

    Calculate: 301 + 526

    Answer: 301 + 526 = 827
  2. 2. Algebra

    Solve: 2x = 28

    Answer: x = 14
  3. 3. Geometry

    Adjacent = 12cm, hypotenuse = 18cm. Find the angle

    Answer: 48.2°
  4. 4. Ratio

    Calculate 24.6% of 588

    Answer: 144.65
  5. 5. Statistics

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

    Answer: 8⁄13

Thursday 28 May 2026

Keystones #148 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 49 + ? = 114

    Answer: 65
  2. 2. Algebra

    Solve: 9x = 90

    Answer: x = 10
  3. 3. Geometry

    Adjacent = 27cm, hypotenuse = 45cm. Find the angle

    Answer: 53.1°
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    Calculate the mean of: 23, 10, 12, 26, 28, 50

    Answer: 24.8

Friday 29 May 2026

Keystones #149 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 114. What are the numbers?

    Answer: 37, 38, and 39
  2. 2. Algebra

    Find the next term: 1, 2, 4, 7, ...

    Answer: 11
  3. 3. Geometry

    Opposite = 8cm, adjacent = 11cm. Calculate the angle

    Answer: 36°
  4. 4. Ratio

    Calculate 10.5% of 679

    Answer: 71.3
  5. 5. Statistics

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

    Answer: 2⁄5