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Lintel Jan 1 - 7 25 questions
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Monday 7 February 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 135. What are the numbers?

    Answer: 44, 45, and 46
  2. 2. Algebra

    Solve: 5x = 25

    Answer: x = 5
  3. 3. Geometry

    Opposite = 15cm, adjacent = 20cm. Calculate the angle

    Answer: 36.9°
  4. 4. Ratio

    Find 60% of 148

    Answer: 88.8
  5. 5. Statistics

    Find the range of: -1, 30, 30, -13, -14

    Answer: 44

Tuesday 8 February 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 991 + 887

    Answer: 1878
  2. 2. Algebra

    Solve: 5x = 75

    Answer: x = 15
  3. 3. Geometry

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

    Answer: 40.6°
  4. 4. Ratio

    Find 78% of 273

    Answer: 212.94
  5. 5. Statistics

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

    Answer: 211

Wednesday 9 February 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 571 + 947

    Answer: 571 + 947 = 1518
  2. 2. Algebra

    Factorise fully: 25x² + 10x

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

    Adjacent = 18cm, hypotenuse = 24cm. Find the angle

    Answer: 41.4°
  4. 4. Ratio

    Simplify: 15:6:18

    Answer: 5:2:6
  5. 5. Statistics

    Calculate the mean of: 50, 46, 27, 31, 44, 48, 21

    Answer: 38.1

Thursday 10 February 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    43000

    Answer: 4.3 × 104
  2. 2. Algebra

    Solve: x6 = 5.6666666666667

    Answer: x = 34
  3. 3. Geometry

    Calculate the perimeter of a right triangle with sides 6cm and 10cm

    Answer: 27.7cm
  4. 4. Ratio

    Simplify: 16:24:24

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

    Calculate the mean of: 21, 42, 47, 33, 24, 41

    Answer: 34.7

Friday 11 February 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 992 + 612

    Answer: 1604
  2. 2. Algebra

    Solve: 8x - 5 = 6x + 11

    Answer: x = 8
  3. 3. Geometry

    Adjacent = 21cm, hypotenuse = 33cm. Find the angle

    Answer: 50.5°
  4. 4. Ratio

    Simplify: 8:24:16

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

    A spinner has 6 red, 3 blue and 4 green sections. Probability of landing on red?

    Answer: 613