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Lintel Jan 6 - 12 25 questions
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Monday 6 January 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.069

    Answer: 6.9 × 10-2
  2. 2. Algebra

    Factorise: x² + 5x - 6

    Answer: (x + 6)(x - 1)
  3. 3. Geometry

    Adjacent = 14cm, angle = 37°. Find opposite

    Answer: 10.5cm
  4. 4. Ratio

    Express the first part of 6:4 as a fraction in simplest form

    Answer: 35
  5. 5. Statistics

    The mean of 4 numbers is 33. If 3 of them are 34, 27, 28, what is the missing number?

    Answer: 43

Tuesday 7 January 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    18000000

    Answer: 1.8 × 107
  2. 2. Algebra

    Factorise: x² - 9x + 20

    Answer: (x - 5)(x - 4)
  3. 3. Geometry

    Hypotenuse = 29cm, angle = 65°. Find adjacent side

    Answer: 12.3cm
  4. 4. Ratio

    Simplify: 24:16:16

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

    Calculate the mean of: 30, 22, 25, 8, 12, 32, 44, 29

    Answer: 25.3

Wednesday 8 January 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    36000000

    Answer: 3.6 × 107
  2. 2. Algebra

    Factorise: x² + 4x - 5

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

    Hypotenuse = 31cm, angle = 30°. Find adjacent side

    Answer: 26.8cm
  4. 4. Ratio

    Express the first part of 2:5 as a fraction in simplest form

    Answer: 27
  5. 5. Statistics

    Calculate the mean of: 48, 38, 5, 21, 14, 41, 40, 23

    Answer: 28.8

Thursday 9 January 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0015

    Answer: 1.5 × 10-3
  2. 2. Algebra

    Factorise: x² + 5x - 14

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

    Adjacent = 17cm, angle = 40°. Find opposite

    Answer: 14.3cm
  4. 4. Ratio

    Simplify: 15:15:12

    Answer: 5:5:4
  5. 5. Statistics

    The mean of 6 numbers is 36. If 5 of them are 41, 33, 16, 43, 36, what is the missing number?

    Answer: 47

Friday 10 January 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00038

    Answer: 3.8 × 10-4
  2. 2. Algebra

    Factorise: x² + x - 12

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

    Hypotenuse = 29cm, angle = 39°. Find adjacent side

    Answer: 22.5cm
  4. 4. Ratio

    Divide 72 in the ratio 2:1:1

    Answer: 36, 18 and 18
  5. 5. Statistics

    The mean of 5 numbers is 20. If 4 of them are 44, 42, 20, 47, what is the missing number?

    Answer: -53