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Lintel Jan 1 - 7 25 questions
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Monday 7 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: y3 × y3 × y5

    Answer: y11
  2. 2. Algebra

    Factorise fully: 6x² + 21x

    Answer: 3x(2x + 7)
  3. 3. Geometry

    Calculate the distance between (7, 2) and (10, 6)

    Answer: 5
  4. 4. Ratio

    Calculate 12.7% of 333

    Answer: 42.29
  5. 5. Statistics

    Find the range of: -8, -26, 23, 10, 8

    Answer: 49

Tuesday 8 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 996 + 717

    Answer: 1713
  2. 2. Algebra

    Solve: x⁄4 = 6

    Answer: x = 24
  3. 3. Geometry

    Opposite = 13cm, adjacent = 12cm. Calculate the angle

    Answer: 47.3°
  4. 4. Ratio

    Calculate 38.9% of 362

    Answer: 140.82
  5. 5. Statistics

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

    Answer: 3⁄11

Wednesday 9 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 94 + ? = 146

    Answer: 52
  2. 2. Algebra

    Solve: 2x = 30

    Answer: x = 15
  3. 3. Geometry

    Adjacent = 28cm, hypotenuse = 44cm. Find the angle

    Answer: 50.5°
  4. 4. Ratio

    Calculate 28.5% of 742

    Answer: 211.47
  5. 5. Statistics

    Calculate the mean of: 33, 46, 32, 35, 13, 11, 24

    Answer: 27.7

Thursday 10 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 79 + ? = 191

    Answer: 112
  2. 2. Algebra

    Factorise: 8x² + 3x

    Answer: x(8x + 3)
  3. 3. Geometry

    Calculate perimeter: two sides are 12cm and 15cm at right angles

    Answer: 46.2cm
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

    Calculate the mean of: 19, 46, 16, 49, 13, 41

    Answer: 30.7

Friday 11 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 997 + 572

    Answer: 1569
  2. 2. Algebra

    Solve: x⁄3 = 2

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 9cm
  4. 4. Ratio

    Calculate 19.4% of 472

    Answer: 91.57
  5. 5. Statistics

    A spinner has 6 red, 2 blue and 4 green sections. Probability of landing on red?

    Answer: 1⁄2