Understanding Multiples and Prime Numbers for Kids: Examples, Worksheets, and Tips

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Alice

15/01/2023

Maths

Types of numbers

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Maths

Number

Surds

Multiplying and dividing surds

Understanding Multiples and Prime Numbers for Kids: Examples, Worksheets, and Tips

Understanding multiples, prime numbers, and operations with negative numbers is crucial for young math students. This guide covers key concepts including multiples of numbers, prime numbers, adding and subtracting negative numbers, multiplying and dividing negative numbers, squares, cubes, and square and cube roots. Through clear explanations and examples, students can grasp these fundamental mathematical principles.

Key points:

Multiples are numbers in a given number's times table
Prime numbers have exactly two factors
Rules for operations with negative numbers
Squaring and cubing numbers, including negative numbers
Finding square roots and cube roots

15/01/2023

14/01/ 23.
week
Multiples.
The multiple of a number are all the
numbers in its times table.
The multiples of 5 ore all the numbers
in the 5

Prime Numbers

This page focuses on prime numbers and how to identify them.

Definition: A prime number is a number with exactly two factors.

The page lists some prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31.

Example: To determine if a number is prime, we check its factors. For instance, 1 is not a prime number because it only has one factor. 8 is not prime because it has factors 1, 2, 4, and 8. 7 is prime because its only factors are 1 and 7.

Highlight: Recognizing prime numbers is an essential skill in number theory and has applications in various areas of mathematics.

View

Adding and Subtracting Negative Numbers

This page explains how to add and subtract negative numbers using a number line approach.

Example: For -3 + 5, start at -3 on the number line and move 5 steps to the right, landing on 2. Therefore, -3 + 5 = 2.

The page provides several examples and practice problems, including:

-2 - 6 = -8
16 + $-2$ = 14
32 + $-8$ = 24
-4 - 5 = -9
-30 - 43 = -73

Highlight: Understanding how to add and subtract negative numbers is crucial for solving more complex mathematical problems and real-world applications.

View

Multiplying and Dividing Negative Numbers

This page covers the rules for multiplying and dividing negative numbers.

Definition: When multiplying or dividing numbers with different signs, the result is negative. When the signs are the same, the result is positive.

The rules are summarized as follows:

Positive × Positive = Positive
Negative × Positive = Negative
Negative × Negative = Positive
Positive ÷ Positive = Positive
Negative ÷ Positive = Negative
Positive ÷ Negative = Negative
Negative ÷ Negative = Positive

Example: -5 × -4 = 20 $positive result because both numbers are negative$

The page provides practice problems such as:

6 × -6 = -36
-20 ÷ 5 = -4
35 ÷ -5 = -7
-50 ÷ -5 = 10

Highlight: Mastering these rules is essential for solving equations and understanding more advanced mathematical concepts.

View

Squares and Square Roots

This page introduces the concept of squaring numbers and finding square roots.

Definition: To square a number, we multiply the number by itself.

Example: 3 squared $3²$ is 3 × 3 = 9, and 4 squared $4²$ is 4 × 4 = 16.

The page provides examples of squaring larger numbers and negative numbers:

9² = 81
$-8$ ² = 64

Practice problems include:

2² = 4
7² = 49
$-4$ ² = 16
$-10$ ² = 100

Highlight: Understanding squares is crucial for areas such as geometry and algebra.

The page also introduces square roots as the inverse operation of squaring.

Example: The square root of 81 is 9 because 9² = 81.

Practice problems for square roots include:

√9 = 3
√144 = 12
√4 = 2
√100 = 10

Highlight: Square roots are essential in many areas of mathematics and science, including solving quadratic equations and calculating distances.

View

Cubes and Cube Roots

This page explains the concept of cubing numbers and finding cube roots.

Definition: To cube a number, we multiply the number by itself twice $or multiply the number by its square$ .

Example: 4³ = 4 × 4 × 4 = 64

The page provides examples of cubing numbers:

10³ = 10 × 10 × 10 = 1000

Practice problems include:

2³ = 8
$-4$ ³ = -64

Highlight: Understanding cubes is important for volume calculations and more advanced mathematical concepts.

The page also introduces cube roots as the inverse operation of cubing.

Definition: The cube root of a number is the value that, when cubed, gives the original number.

Example: The cube root of 1000 is 10 because 10³ = 1000.

Practice problems for cube roots include:

³√27 = 3
³√8 = 2

Highlight: Cube roots are used in various fields, including engineering and physics, for solving three-dimensional problems.

View

Additional Practice and Review

This final page provides additional practice problems and reviews key concepts covered in the previous pages. It reinforces the understanding of squares, cubes, square roots, and cube roots.

Example: ³√216 = 6 because 6³ = 216

The page includes practice problems such as:

³√27 = 3
³√125 = 5
³√1000 = 10

Highlight: Regular practice with these concepts helps solidify understanding and improves problem-solving skills in mathematics.

The page concludes with a reminder of the importance of mastering these fundamental mathematical operations for success in more advanced mathematical studies.

View

Understanding Multiples and Prime Numbers

This page introduces the concept of multiples and provides examples for finding multiples of different numbers.

Definition: Multiples of numbers are all the numbers in its times table.

For example, the multiples of 5 are all the numbers in the 5 times table. The page demonstrates how to find the first 5 multiples of 3 and 7.

Example: The first 5 multiples of 3 are 3, 6, 9, 12, 15.

The page also covers multiples of 10, showing that the first 5 multiples of 10 are 10, 20, 30, 40, 50.

Highlight: Understanding multiples is fundamental for more advanced mathematical concepts and problem-solving.

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Subjects

Maths

Number

Surds

Multiplying and dividing surds

Maths

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15 Jan 2023

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8 pages

Understanding Multiples and Prime Numbers for Kids: Examples, Worksheets, and Tips

Alice

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Prime Numbers

This page focuses on prime numbers and how to identify them.

Definition: A prime number is a number with exactly two factors.

The page lists some prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31.

Example: To determine if a number is prime, we check its factors. For instance, 1 is not a prime number because it only has one factor. 8 is not prime because it has factors 1, 2, 4, and 8. 7 is prime because its only factors are 1 and 7.

Highlight: Recognizing prime numbers is an essential skill in number theory and has applications in various areas of mathematics.

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Adding and Subtracting Negative Numbers

This page explains how to add and subtract negative numbers using a number line approach.

Example: For -3 + 5, start at -3 on the number line and move 5 steps to the right, landing on 2. Therefore, -3 + 5 = 2.

The page provides several examples and practice problems, including:

-2 - 6 = -8
16 + $-2$ = 14
32 + $-8$ = 24
-4 - 5 = -9
-30 - 43 = -73

Highlight: Understanding how to add and subtract negative numbers is crucial for solving more complex mathematical problems and real-world applications.

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Improve your grades

Join milions of students

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Multiplying and Dividing Negative Numbers

This page covers the rules for multiplying and dividing negative numbers.

Definition: When multiplying or dividing numbers with different signs, the result is negative. When the signs are the same, the result is positive.

The rules are summarized as follows:

Positive × Positive = Positive
Negative × Positive = Negative
Negative × Negative = Positive
Positive ÷ Positive = Positive
Negative ÷ Positive = Negative
Positive ÷ Negative = Negative
Negative ÷ Negative = Positive

Example: -5 × -4 = 20 $positive result because both numbers are negative$

The page provides practice problems such as:

6 × -6 = -36
-20 ÷ 5 = -4
35 ÷ -5 = -7
-50 ÷ -5 = 10

Highlight: Mastering these rules is essential for solving equations and understanding more advanced mathematical concepts.

Sign up to see the contentIt's free!

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Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Squares and Square Roots

This page introduces the concept of squaring numbers and finding square roots.

Definition: To square a number, we multiply the number by itself.

Example: 3 squared $3²$ is 3 × 3 = 9, and 4 squared $4²$ is 4 × 4 = 16.

The page provides examples of squaring larger numbers and negative numbers:

9² = 81
$-8$ ² = 64

Practice problems include:

2² = 4
7² = 49
$-4$ ² = 16
$-10$ ² = 100

Highlight: Understanding squares is crucial for areas such as geometry and algebra.

The page also introduces square roots as the inverse operation of squaring.

Example: The square root of 81 is 9 because 9² = 81.

Practice problems for square roots include:

√9 = 3
√144 = 12
√4 = 2
√100 = 10

Highlight: Square roots are essential in many areas of mathematics and science, including solving quadratic equations and calculating distances.

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Cubes and Cube Roots

This page explains the concept of cubing numbers and finding cube roots.

Definition: To cube a number, we multiply the number by itself twice $or multiply the number by its square$ .

Example: 4³ = 4 × 4 × 4 = 64

The page provides examples of cubing numbers:

10³ = 10 × 10 × 10 = 1000

Practice problems include:

2³ = 8
$-4$ ³ = -64

Highlight: Understanding cubes is important for volume calculations and more advanced mathematical concepts.

The page also introduces cube roots as the inverse operation of cubing.

Definition: The cube root of a number is the value that, when cubed, gives the original number.

Example: The cube root of 1000 is 10 because 10³ = 1000.

Practice problems for cube roots include:

³√27 = 3
³√8 = 2

Highlight: Cube roots are used in various fields, including engineering and physics, for solving three-dimensional problems.

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Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Additional Practice and Review

This final page provides additional practice problems and reviews key concepts covered in the previous pages. It reinforces the understanding of squares, cubes, square roots, and cube roots.

Example: ³√216 = 6 because 6³ = 216

The page includes practice problems such as:

³√27 = 3
³√125 = 5
³√1000 = 10

Highlight: Regular practice with these concepts helps solidify understanding and improves problem-solving skills in mathematics.

The page concludes with a reminder of the importance of mastering these fundamental mathematical operations for success in more advanced mathematical studies.

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Understanding Multiples and Prime Numbers

This page introduces the concept of multiples and provides examples for finding multiples of different numbers.

Definition: Multiples of numbers are all the numbers in its times table.

For example, the multiples of 5 are all the numbers in the 5 times table. The page demonstrates how to find the first 5 multiples of 3 and 7.

Example: The first 5 multiples of 3 are 3, 6, 9, 12, 15.

The page also covers multiples of 10, showing that the first 5 multiples of 10 are 10, 20, 30, 40, 50.

Highlight: Understanding multiples is fundamental for more advanced mathematical concepts and problem-solving.

Sign up to see the contentIt's free!

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Understanding Multiples and Prime Numbers for Kids: Examples, Worksheets, and Tips

Prime Numbers

Adding and Subtracting Negative Numbers

Multiplying and Dividing Negative Numbers

Squares and Square Roots

Cubes and Cube Roots

Additional Practice and Review

Understanding Multiples and Prime Numbers

Similar content

Can't find what you're looking for? Explore other subjects.

Knowunity is the #1 education app in five European countries

Knowunity has been named a featured story on Apple and has regularly topped the app store charts in the education category in Germany, Italy, Poland, Switzerland, and the United Kingdom. Join Knowunity today and help millions of students around the world.

4.9+

21 M

#1

950 K+

Still not convinced? See what other students are saying...

I love this app so much, I also use it daily. I recommend Knowunity to everyone!!! I went from a D to an A with it :D

The app is very simple and well designed. So far I have always found everything I was looking for :D

I love this app ❤️ I actually use it every time I study.

Understanding Multiples and Prime Numbers for Kids: Examples, Worksheets, and Tips

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Prime Numbers

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Adding and Subtracting Negative Numbers

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Multiplying and Dividing Negative Numbers

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Squares and Square Roots

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Cubes and Cube Roots

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Additional Practice and Review

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Understanding Multiples and Prime Numbers

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