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  • Investigate numbers exactly divisible by 3

    Learning Intentions


    To revise the terms factor and multiple

    To identify patterns of divisibilty through investigating 3, 4,or 5 digit numbers.

    To use multiplication and division as inverse operations to check responses.

    To use a calculator to check responses for larger numbers.

    Introduction

    What is an even number?

    What is an odd number?
    What is a prime number?

    What is a composite number?

    Look at the equation below, Can you identify the difference between a factor and a multiple?

    Main learning

    Use your multiplication square.

    What are the first 10 multiples of 2 

    Do they all end in an even number?

    What are the first 10 multiples of 5

    What are the last digits? Is there a pattern?


    What are the first 10 multiples of 3?

    There is a pattern here also. Can you figure it out?

    Is 123 divisible by 3?

    How would you check?