Divisibility rules

Divisibility rules

Had enough of listening to rules at home and at school? Well, we promise we won't give you too many! In this section, we will be using a set of divisibility rules to find the factors of whole numbers. These divisibility rules allow us to determine whether a given number is divisible by numbers two through ten by examining the digits of the number.
Basic Concepts: Place value, Determining Common Factors, Determining common multiples
Related Concepts: Understanding integer division, Dividing integers

Lessons

  • Introduction
    a)
    What are the divisibility rules?

  • 1.
    Circle the numbers below that are divisible by 2 and underline the numbers that are divisible by 5

    84

    23

    70

    11

    92

    59

    60

    24

    37

  • 2.
    Circle the numbers below that are divisible by 10 and underline the numbers that are divisible by 3

    63

    99

    90

    60

    24

    102

    10

    71

    75

  • 3.
    Samantha sorted her toys by type into 6 containers. Then she counted how many toys of each type that she had and created the table below. Circle the numbers that are divisible by 6 and underline the numbers that are divisible by 4.

    Toy

    Number

    Stuffies

    16

    Dolls

    124

    Barbies

    56

    Ferbies

    22

    Marbles

    332

    Plastic toys

    24

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1.
Number Theory
1.1
Divisibility Rules
1.2
Determining Common Factors
1.3
Determining Common Multiples
1.4
Introduction to exponents
Sixth Class Maths