PPT-Divisibility

Objective Learn to test for divisibility Divisibility One whole number is divisible by another if after dividing the remainder is zero For example 18 is divisible by 9 since 18 . Geeta Chaudhry. Tom Cormen. Dartmouth College. Department of Computer Science. Columnsort. Sorts . N. numbers. Organized as . r ×. . s. mesh. Divisibility restriction. : . s. must divide . r. Height restriction. Provided by 1 Divisibility Rules Summer 2013 Divisibility Rules Rule Example Divisibility by 0 No numbers are divisible by 0. None Divisibility by 1 All numbers are divisible by ͳ . All Numb 7 Here Selected Exercises. Goal:. Introduce fundamental . number . theory concepts: . T. he . division . algorithm. Congruences. Rules of modular arithmetic. Copyright © Peter . Cappello. 2. Exercise 10. 2,3,4,5,6,9,10. Divisibility Rules Rhyme. I’m . # 2. and I’ll be your friend, as long as an even . # . is on the end,. #3. will work for me, you see, if the sum is divisible by 3.. The . #4. won’t be such a chore, if the . Number Theory. Dr J Frost (jfrost@tiffin.kingston.sch.uk). www.drfrostmaths.com. Last modified: . 26. th. . November 2015. Objectives: . Have an appreciation of properties of integers (whole numbers), including finding the Lowest Common Multiple, Highest Common Factor, and using the prime factorisation of numbers for a variety of purposes. Rules. What is . Divisibility. ?. . Divisibility means that after dividing, there will be . NO. . remainder.. 356,821. Can you tell by just looking at this . number if . it is divisible by 2? . by . Selected Exercises. Goal:. Introduce fundamental . number . theory concepts: . T. he . division . algorithm. Congruences. Rules of modular arithmetic. Copyright © Peter . Cappello. 2. Exercise 10. 02/19/17. What does it mean for a number to be divisible by another?. What are some common divisibility tests?. Today We’ll Discuss. Definition:. Let . a. and . b. be whole numbers such that . a. 2/23/17. Review!. How . do we decide when a number is prime or composite?. How do we use factor trees?. How do we find and use all primes less than 100?. Today We’ll Discuss. What are the divisibility tests . A NUMBER IS DIVISIBLE BY 2 IF…. its last digit is an even number (0, 2, 4, 6, 8). Example: 2. 0. , 34. 8. , 126. 4. , 80. 2. , 678. 6. A NUMBER IS DIVISIBLE BY 3 IF. . .. The sum of its digits is divisible by 3.. Learning Goals. We will use our divisibility rules so that we can decompose numbers into prime factors.. We’ll know we understand when we can identify the prime factors that are used to form a number.. th. grade Math. What’s the point?. These rules let you test if one number can be evenly divided by another, without having to do too much calculation!. When will you need to use the rules?. Divisibility rules can be used:. www.drfrostmaths.com. Last modified: . 26. th. . November 2015. Objectives: . Have an appreciation of properties of integers (whole numbers), including finding the Lowest Common Multiple, Highest Common Factor, and using the prime factorisation of numbers for a variety of purposes.