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Lintel Aug 16 - 22 25 questions
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Monday 16 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0025

    Answer: 2.5 × 10-3
  2. 2. Algebra

    Factorise: x² - 9x + 18

    Answer: (x - 3)(x - 6)
  3. 3. Geometry

    Adjacent = 28cm, angle = 59°. Find opposite

    Answer: 46.6cm
  4. 4. Ratio

    Simplify: 16:24:8

    Answer: 2:3:1
  5. 5. Statistics

    Calculate the mean of: 11, 13, 21, 33, 49, 39, 16

    Answer: 26

Tuesday 17 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    510000

    Answer: 5.1 × 105
  2. 2. Algebra

    Factorise: x² - 7x + 10

    Answer: (x - 5)(x - 2)
  3. 3. Geometry

    Hypotenuse = 32cm, angle = 58°. Find adjacent side

    Answer: 17cm
  4. 4. Ratio

    Simplify: 9:15:18

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

    The mean of 4 numbers is 20. If 3 of them are 21, 32, 19, what is the missing number?

    Answer: 8

Wednesday 18 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    3100000

    Answer: 3.1 × 106
  2. 2. Algebra

    Factorise: x² + 2x - 8

    Answer: (x + 4)(x - 2)
  3. 3. Geometry

    Hypotenuse = 16cm, angle = 65°. Find adjacent side

    Answer: 6.8cm
  4. 4. Ratio

    Simplify: 6:4:8

    Answer: 3:2:4
  5. 5. Statistics

    The mean of 5 numbers is 33. If 4 of them are 25, 41, 23, 35, what is the missing number?

    Answer: 41

Thursday 19 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.056

    Answer: 5.6 × 10-2
  2. 2. Algebra

    Factorise: x² - 8x + 16

    Answer: (x - 4)(x - 4)
  3. 3. Geometry

    Adjacent = 25cm, angle = 57°. Find opposite

    Answer: 38.5cm
  4. 4. Ratio

    Simplify: 16:16:24

    Answer: 2:2:3
  5. 5. Statistics

    Calculate the mean of: 42, 12, 8, 25, 47, 25

    Answer: 26.5

Friday 20 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    340000

    Answer: 3.4 × 105
  2. 2. Algebra

    Factorise: x² - 10x + 24

    Answer: (x - 4)(x - 6)
  3. 3. Geometry

    Hypotenuse = 27cm, angle = 35°. Find adjacent side

    Answer: 22.cm
  4. 4. Ratio

    Express the first part of 5:3 as a fraction in simplest form

    Answer: 58
  5. 5. Statistics

    The mean of 5 numbers is 26. If 4 of them are 37, 22, 20, 45, what is the missing number?

    Answer: 6