Mathematics Revision Quiz
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Questions and Answers

What is the Highest Common Factor (HCF) of Helen's two numbers?

  • 5 (correct)
  • 15
  • 3
  • 12

    • At what time will a train to Cardiff and a train to London next leave Bristol at the same time?

  • 11:30 am
  • 12:30 pm
  • 11:45 am (correct)
  • 12:15 pm

    • When will a train to Portadown and a train to Portrush next leave the train station at the same time?

  • 12:04 pm
  • 12:28 pm
  • 12:44 pm
  • 12:36 pm (correct)

    • What is the Lowest Common Multiple (LCM) of the two numbers with an HCF of 6 and an LCM of 60?

    <p>60</p> Signup and view all the answers

    After how many seconds will the red, yellow, and green lights next all flash at the same time?

    <p>48 seconds</p> Signup and view all the answers

    What is the Lowest Common Multiple (LCM) of Helen's two numbers?

    <p>60</p> Signup and view all the answers

    How often do trains to Cardiff leave Bristol?

    <p>every 15 minutes</p> Signup and view all the answers

    How often do trains to Portadown leave a train station?

    <p>every 28 minutes</p> Signup and view all the answers

    What essential items should you have before starting an exam?

    <p>Pencil, pen, ruler, protractor, pair of compasses, and eraser</p> Signup and view all the answers

    What is the purpose of tracing paper in an exam?

    <p>If needed</p> Signup and view all the answers

    How many questions should you attempt in an exam?

    <p>All of them</p> Signup and view all the answers

    What is the common factor of the two numbers that satisfy the condition in question 1(a)?

    <p>10</p> Signup and view all the answers

    How often do the red and yellow lights flash together?

    <p>Every 12 seconds</p> Signup and view all the answers

    What is the Least Common Multiple (LCM) of 9 and 12?

    <p>36</p> Signup and view all the answers

    How many minutes will it take for the blue and pink lights to flash together again?

    <p>108 minutes</p> Signup and view all the answers

    What is the smallest number of packets that Mary can buy?

    <p>6 packets</p> Signup and view all the answers

    Study Notes

    Exam Guidelines

    • Ensure you have necessary stationery: pencil, pen, ruler, protractor, pair of compasses, and eraser.
    • Tracing paper can be used if needed.
    • Read each question carefully before answering.
    • Don't spend too long on one question.
    • Attempt every question.
    • Check your answers for accuracy.
    • Always show your workings.

    Common Factors and Multiples

    • Choose two numbers with a common factor of 10.
    • Select two numbers with a common multiple of 24.
    • Identify two numbers with a common factor of 7.
    • Determine two numbers with a common multiple of 200.

    Flashing Lights and Barking Dogs

    • Two lights flash at the same time every 6 and 4 seconds.
    • Tilly and Billy bark at the same time every 9 and 12 seconds.
    • A blue light flashes every 8 minutes, and a pink light flashes every 54 minutes.
    • Both lights flash together at 2 pm.

    Charity Hot Dog Sale

    • Mary buys the same number of bread rolls and hot dogs.
    • There are 18 bread rolls and 15 hot dogs in each packet.
    • Determine the smallest number of packets Mary can buy.

    Highest Common Factor (HCF) and Lowest Common Multiple (LCM)

    • HCF of two numbers is 5, and LCM is a multiple of 12.
    • Two possible numbers Helen could be thinking of.
    • HCF of two numbers is 6, and LCM is 60.
    • Determine the two numbers.

    Trains Leaving Stations

    • Trains leave Bristol to Cardiff every 15 minutes and to London every 21 minutes.
    • Trains to Portadown leave every 28 minutes, and trains to Portrush leave every 16 minutes.
    • Determine the time when trains to Cardiff and London, or Portadown and Portrush, leave at the same time.

    Flashing Lights and Barking Dogs (Again)

    • A red light flashes every 3 seconds, a yellow light every 8 seconds, and a green light every 11 seconds.
    • Determine the time when all three lights flash at the same time.

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    Related Documents

    HCF LCFpdf

    Description

    Revision quiz for mathematics, covering topics such as factors and geometry. Make sure to have necessary stationery and follow the guidance provided.

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