It ends in an even number Example: 12, 48, 52, 60 Non- Example: 3, 47, 81.

Slides:

Advertisements

Similar presentations

Rules of Divisibility. Divisible by 2? If the last digit is even then the number is divisible by 2. Even digits are 0, 2, 4, 6 and 8 (yes zero is even!)

Advertisements

Discovering Divisibility Rules.

Divisibility Rules Page 10 in textbook.

division algorithm Before we study divisibility, we must remember the division algorithm. r dividend = (divisor ⋅ quotient) + remainder.

11 and 6 3 and 9 2, 5, 10 and 4, 8 Divisibility Rules.

Divisibility Rules How do we know when we can divide one number into another exactly?

4.1 Divisibility and Mental Math. Mental Math Is 56 divisible by 7? Think! 56 = 8 x 7 Is 56 divisible by 4? Think! 56 = 8 x 7, and 4 x 2 = 8, 56 is divisible.

Divisibility Rules and Mental Math

Objective: Learn to test for divisibility.

Multiples 1 X 2 = 22 X 2 = 43 X 2 = 6 4 X 2 = 8 What do you call 2,4,6,8 ?Multiples of 2 Why?

1.5 Divisibility Rules SRB pg 11..

Divisibility Rules and Number Theory

Rules of Divisibility 1 - always a factor. 2 - if the last digit is a 0, 2, 4, 6, or if the sum of the digits is divisible by if the last.

Divisibility Rules!.

DIVISIBILITY RULES.

Ways to Check for Divisibility Dividing By 1 All numbers are divisible by 1.

Divisibility Rules and Finding Factors

To make the Divisibility Rules foldable, you will need 4 pieces of paper

Ways to Check for Divisibility Dividing By 1 All numbers are divisible by 1.

Divisibility Rules: What are they? Rules to help you determine if numbers are divisible by other numbers. Divisible – if a number can be divided by another.

Free Powerpoint Templates Page 1 Free Powerpoint Templates Random Interesting Math Tricks (more importantly, how do they work) HWW Math Club 11/28/2011.

Divisibility and Mental Math. Vocabulary A number is divisible by another number if it can be divided into and result in a remainder of is divisible.

2, 3, 5, 9, 10 “Divisible BY” What does it mean?

Divisibility Rules. Divisibility What is Divisibility ? Divisibility means that after dividing, there will be NO remainder.

All even numbers are divisible by 2 Even numbers are numbers that end with either 0, 2, 4, 6, or 8.

Divisibility Rules 01 Number Theory

Divisibility Rules. What Are Divisibility Rules? They are a quick way to tell if one number can be completely divided into another without a remainder.

DIVISIBILITY RULES LESSON 3. Dividing by 2 All even numbers are divisible by 2. Example: all numbers ending in 0,2,4,6 or 8.

Divisibility and Mental Math Lesson 3-1. Vocabulary A number is divisible by another number if it can be divided into and result in a remainder of 0.

The Rules for Divisibility Focus 3: 6.NS.2. Start on a “Fresh Left” page! Heading for your Math Workbook Page "Divisible By" means "when you divide one.

Create the cover page by inserting clip art, WordArt, and text. Triple-click and enter your name here. Do not press the delete key! Triple-click and enter.

My Book of Divisibility. THE 2’s Example: 30, 42, 24, 76, 98, Must be an even number Number must end in a 0, 2, 4, 6, or 8.

Converting Decimals to Fractions Goal: use place values to make fractions.

Do Now Write as an exponent 3 x 3 x 3 x 3 4 x 4 x 4 x 4 x 4 5 x 5 x 5 What is a factor? Define in your own words.

DIVISIBILITY RULES. A number is divisible by: If the number ends in 0 the number is also divisible by 2 and 3 the sum of the number's digits.

Divisibility Rules.

Divisibility Rules Divisible by: If: Example: 2

Multiplying by powers of 10 Decimals

Divisibility and Mental Math

Divisibility and Mental Math

Divisibility Rules.

How do we know when we can divide one number into another exactly?

Grade 5 Representing Decimal Thousandths Dividing with Fractions

Divisibility and Mental Math

Divisibility Rules.

Divisibility Rules.

Divisibilty Rules!.

Prime Factorization.

Divisibility Rules.

Tests of Divisibility 1 - All integers can be divided by 1

Divisibility Rules!.

Divisibility Rules.

Divisibility Rules.

Divisibility Rules.

Section 4.1 Divisibility and Factors

A number is divisible by 2 (is even) if it has a ones digit of 0, 2, 4, 6, or 8 (that is, it has an even ones digit). Examples: A number is divisible by.

Divisibility Rules.

Objective: Learn to test for divisibility.

Prime Numbers and Prime Factorization

How do we know when we can divide one number into another exactly?

Divisibility Rules.

Rules of Divisibility A number is said to be “divisible” by a number if you can divide it by that number and get no remainder.

Divisibility Rules.

10 questions in 5 minutes .. Can you beat the time?

Divisibility tests These are simple tricks to test what a number can be shared by . We are going to learn tricks for testing if a number can be shared.

Reducing (Simplifying) Fractions

Divide 9 × by 3 ×

Divisibility A number is divisible by another number if the quotient is a whole number with no remainder.

Presentation transcript:

It ends in an even number Example: 12, 48, 52, 60 Non- Example: 3, 47, 81

the sum of the digits is divisible by 3. Example- 15: 1+5=6 can be divided by 3 Non- Example- 16: 1+6=7 cannot be divided by 3

The last 2 digits form a number that is divisible by 4. Example- 816: 16 IS divisible by 4 Non- Example- 923: 23 is NOT divisible by 4.

The last digit is a 5 or 0. Example- 630, 45, 90 Non- Example- 42, 18, 33

It is divisible by both 2 and 3. Example- 12, 30, 36 Non-Example- 15, 26, 33

You divide the number and it is divisible by 7. (Sorry! No fancy trick here!)

The last 3 digits form a number that is divisible by 8. Example : 816÷8=102 Non-Example : 302÷8=37¾

The sum of all the digits is divisible by 9. Example- 1629: =18 can be divided by 9 Non-Example- 2013: =6 cannot be dived by 9