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

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.
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
1.5 Divisibility Rules SRB pg 11..
5 Minute Check Find the prime factorization for each number
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.
13.3 – Arithmetic and Geometric Series and Their Sums Objectives: You should be able to…
DIVISIBILITY RULES.
Ways to Check for Divisibility Dividing By 1 All numbers are divisible by 1.
Divisibility Rules and Finding Factors
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.
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 Tests How can you tell quickly whether a number can be divided exactly by another?
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.
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.
It ends in an even number Example: 12, 48, 52, 60 Non- Example: 3, 47, 81.
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.
Beat the Clock Spelling Challenge Version 1. o.
An introduction to logical reasoning: Sudoku. Today we are learning about: Logical reasoning ●I can use logical reasoning to solve a problem.
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.
Lesson 4-1 Pages Factors and Monomials.
Divisibility Rules Practice 2, 5, or 10?
Divisibility Rules.
Solve more difficult number problems mentally
Exercise 24 ÷ 2 12.
Ways to Check for Divisibility
Divisibility Rules Divisible by: If: Example: 2
Divisibility and Mental Math
Divisibility and Mental Math
Divisibility Rules.
Created by Educational Technology Network
How do we know when we can divide one number into another exactly?
Divisibility and Mental Math
Divisibility Rules.
Divisibility Rules.
Divisibilty Rules!.
Prime Factorization.
Divisibility Rules.
Divisibility Rules!.
Divisibility Rules.
Divisibility Rules.
Divisibility Rules.
Divisibility Rules How to Check for Divisibility
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?
Name _________________________ Date _______________
Divisibility Rules.
Divisibility 4,8 and 11.
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 and Mental Math
To Start: 15 Points Solve the following: 21,672 ÷ 3 = 45,225 ÷ 5 = 210,060 ÷ 10 = 7,224 9,045 21,006.
10 questions in 5 minutes .. Can you beat the time?
Using Addition Properties
Reducing (Simplifying) Fractions
Name _________________________ Date _______________
Divisibility A number is divisible by another number if the quotient is a whole number with no remainder.
Presentation transcript:

10 questions in 5 minutes .. Can you beat the time? Challenge 10 questions in 5 minutes .. Can you beat the time? Is 37 divisible by 2? Explain No 27 is not an even number Is 20 divisible by 6 ? Explain No A number is divisible by 6 if its divisible by 2 and 3 .. 20 is not divisible by 3 2+0 =2 Is 190 divisible by 9 ? Explain No A number is divisible by 9 if the sum of the digits divisible by 9 1+9+0 = 10 10 is not divisible by 9 Is 3090 divisible by 3 ? Explain Yes A number is divisible by 3 if the sum of the digits divisible by 3 3+0+9+0 = 12 12 is divisible by 3 Is 336 divisible by 4 ? Explain Yes A number is divisible by 4 if the last 2 digits is divisible by 4 36÷ 4 = 9 Is 454 divisible by 5 ? Explain No A number is divisible by 5 if the last digit is 0 or 5 Is 220 divisible by 25 ? Explain No An number is divisible by 25 if the last 2 digits are 00 , 25 , 75 or 50 Is 341 divisible by 10 ? Explain No An number is divisible by 10 if the last digit is 0 Is 5600 divisible by 100 ? Explain Yes A number is divisible by 100 if the last 2 digits is 00 Is 10756 divisible by 8 ? Explain