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Lintel Jan 1 - 7 25 questions
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Monday 27 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 60 + ? = 200

    Answer: 140
  2. 2. Algebra

    Solve: 5x = 35

    Answer: x = 7
  3. 3. Geometry

    Opposite = 18cm, adjacent = 8cm. Calculate the angle

    Answer: 66°
  4. 4. Ratio

    Simplify the ratio 3m:300cm

    Answer: 1:100
  5. 5. Statistics

    Find the range of: 28, -20, 0, 13, -30

    Answer: 58

Tuesday 28 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 862 + 336

    Answer: 862 + 336 = 1198
  2. 2. Algebra

    Solve: 5x = 25

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 13cm

    Answer: 13.93cm
  4. 4. Ratio

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 3 red, 2 blue and 6 green sections. Probability of landing on red?

    Answer: 3⁄11

Wednesday 29 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 126. What are the numbers?

    Answer: 41, 42, and 43
  2. 2. Algebra

    Solve: x⁄5 = 4.2

    Answer: x = 21
  3. 3. Geometry

    Find c if a = 14cm and b = 20cm in a right triangle

    Answer: 24.4cm
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    Calculate the mean of: 11, 41, 39, 42, 42, 32, 18, 5

    Answer: 28.8

Thursday 30 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 999 + 847

    Answer: 1846
  2. 2. Algebra

    Solve: x⁄7 = 5.7142857142857

    Answer: x = 40
  3. 3. Geometry

    Opposite = 8cm, adjacent = 17cm. Calculate the angle

    Answer: 25.2°
  4. 4. Ratio

    Calculate 19.5% of 390

    Answer: 76.05
  5. 5. Statistics

    Calculate the mean of: 9, 39, 8, 48, 24, 6, 24, 29

    Answer: 23.4

Friday 31 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 711 + 652

    Answer: 711 + 652 = 1363
  2. 2. Algebra

    Collect like terms: 3x + 4y + 2x + 8y

    Answer: 5x + 12y
  3. 3. Geometry

    Adjacent = 24cm, hypotenuse = 32cm. Find the angle

    Answer: 41.4°
  4. 4. Ratio

    Calculate 11.9% of 674

    Answer: 80.21
  5. 5. Statistics

    A spinner has 5 red, 2 blue and 2 green sections. Probability of landing on red?

    Answer: 5⁄9