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Lintel Jan 1 - 7 25 questions
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Monday 26 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 999 + 817

    Answer: 1816
  2. 2. Algebra

    Solve: x⁄4 = 7

    Answer: x = 28
  3. 3. Geometry

    Adjacent = 16cm, hypotenuse = 33cm. Find the angle

    Answer: 61°
  4. 4. Ratio

    Calculate 22.7% of 731

    Answer: 165.94
  5. 5. Statistics

    A spinner has 5 red, 2 blue and 3 green sections. Probability of landing on red?

    Answer: 1⁄2

Tuesday 27 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 98 + ? = 120

    Answer: 22
  2. 2. Algebra

    What is the next term? 7, 28, 112, 448, ...

    Answer: 1792
  3. 3. Geometry

    Opposite = 14cm, adjacent = 12cm. Calculate the angle

    Answer: 49.4°
  4. 4. Ratio

    Simplify the ratio 2m:200cm

    Answer: 1:100
  5. 5. Statistics

    Calculate the mean of: 22, 20, 40, 40, 28, 18, 22, 24

    Answer: 26.8

Wednesday 28 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 46 + ? = 177

    Answer: 131
  2. 2. Algebra

    Factorise: 5x² + 5x

    Answer: 5x(x + 1)
  3. 3. Geometry

    Opposite = 20cm, adjacent = 9cm. Calculate the angle

    Answer: 65.8°
  4. 4. Ratio

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics

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

    Answer: 7⁄15

Thursday 29 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 93. What are the numbers?

    Answer: 30, 31, and 32
  2. 2. Algebra

    Solve: x⁄2 = 3

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Calculate 11.4% of 316

    Answer: 36.02
  5. 5. Statistics

    Find the range of: -21, -15, -17, 3, 50

    Answer: 71

Friday 30 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 997 + 592

    Answer: 1589
  2. 2. Algebra

    Solve: x⁄8 = 4

    Answer: x = 32
  3. 3. Geometry

    Calculate the distance between (8, 1) and (11, 5)

    Answer: 5
  4. 4. Ratio

    Calculate 35.7% of 868

    Answer: 309.88
  5. 5. Statistics

    Find the range of: 40, -16, 50, 10, -18

    Answer: 68