Divisiblity Rules F (taught).notebook August 07, 2013

Bell Ringer Name the decimal place indicated. Then round to that decimal place. Divisibility Rules 1. 67,149 2. 1.3446 3. 25.8

You will be able to . . . Divisiblity A number is divisible by another if the remainder • Determine whether a number is divisible by 2, is 0 when you divide. (In other words, if you get a 3, 5, 6, 9, or 10. whole number, not a decimal.) Ex: Divisible or not? a. 34 by 2 b. 10 by 4 c. 737 by 5

Divisibility Rule for 2 Example: Determine whether the following A number is divisible by 2 if it ends in 0, 2, 4, 6, numbers are divisible by 2. or 8. a. 542 b. 647 c. 9,001 d. 46

1 Divisiblity Rules F (taught).notebook August 07, 2013

Divisibility Rule for 5 Example: Determine whether the following A number is divisible by 5 if it ends in 0 or 5. numbers are divisible by 5. a. 75 b. 439 c. 3,050 d. 5

Divisibility Rule for 10 Example: Determine whether the following A number is divisible by 10 if it ends in 0. numbers are divisible by 10. a. 3005 b. 250 c. 622 d. 89,620

Example: State whether each number is divisible Your Turn: State whether each number is by 2, 5, or 10. (More than one answer is divisible by 2, 5, or 10. (More than one answer is possible!) possible!) a. 288 b. 300 c. 4,805 1. 50 2. 1,015 3. 1,118

2 Divisiblity Rules F (taught).notebook August 07, 2013

Divisibility Rule for 3 Example: Determine whether the following A number is divisible by 3 if the sum of its digits is numbers are divisible by 3. divisible by 3. a. 321 b. 54 c. 534 d. 26

Divisibility Rule for 9 Example: Determine whether the following A number is divisible by 9 if the sum of its digits numbers are divisible by 9. is divisible by 9. a. 82 b. 63 c. 234 d. 872

Example: Determine whether the following Your Turn: Determine whether the following numbers are divisible by 3 or 9. (More than one numbers are divisible by 3 or 9. (More than one answer is possible!) answer is possible!) a. 567 b. 174 c. 1,015 d. 114 1. 78 2. 5,751 3. 45 4. 60

3 Divisiblity Rules F (taught).notebook August 07, 2013

Divisibility Rule for 6 Example: Determine whether the following A number is divisible by 6 if it is divisible by both numbers are divisible by 6. 2 and 3. a. 60 b. 93 c. 198 d. 5,433

• Divisible by 2 ­

• Divisible by 3 ­

Your Turn: Determine whether the following Example: Determine whether the following numbers are divisible by 6. numbers are divisible by 2, 3, 5, 6, 9, or 10. 1. 4,710 2. 975 3. 66 (More than one answer is possible!) a. 111 b. 131 c. 288 d. 300

Your Turn: Determine whether the following Homework numbers are divisible by 2, 3, 5, 6, 9, or 10. (More than one answer is possible!) "Divisibility and Factors" worksheet 1. 52 2. 891 3. 4,805 4. 108

4