Divisibility Rules for 2, 5 and 10

Divisibility Rules for 2, 5, and 10. Grade 5 Math Lesson Week 1.

Divisibility Rules. The rules are shortcuts for finding out whether numbers are exactly divisible without doing division calculations.
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1. 2, 5, and 10 DIVISIBILITY RULES

2. 2, 5, and 10 DIVISIBILITY RULES EXERCISES on

3. DIVISIBILITY RULES The rules are shortcuts for finding out whether numbers are exactly divisible without doing division calculations. “ ”

4. Divisible by 2 If the number ends with 0, 2, 4, 6, or 8 then it is divisible by 2. “ ”

5. Divisible by 2 248 Look at the last digit of this number Is the number ends with 0, 2, 4, 6, or 8? Then it is divisible by 2.

6. Numbers Divisible by 2? Why? 232 694 725 426 107 Test yourself

7. Numbers Divisible by 2? Why? 232 yes the last digit is 2 694 yes the last digit is 4 725 no the last digit is 5 not 0,2,4,6,8 426 yes the last digit is 6 107 no the last digit is 7 not 0,2,4,6,8 Test yourself

8. Divisible by 5 If the number ends with a 0, or a 5 then it is divisible by 5. “ ”

9. Divisible by 5 135 Look at the last digit of this number Is the number ends with 0 or 5? Then it is divisible by 5.

10. Numbers Divisible by 5? Why? 235 194 120 426 Test yourself

11. Numbers Divisible by 5? Why? 235 yes the last digit is 5 194 no the last digit is 4 not 0 or 5 120 yes the last digit is 0 426 no the last digit is 6 not 0 or 5 Test yourself

12. Divisible by 10 If the last digit of the number is a then it is divisible by 10. “ ”

13. Divisible by 10 370 Look at the last digit of this number Is the number ends with 0? Then it is divisible by 10.

14. Numbers Divisible by 10? Why? 230 yes the last digit is 0 194 no the last digit is 4 not 0 125 no the last digit is 5 not 0 426 no the last digit is 6 not 0 Test yourself

15. Apply your skills Use divisibility rules to help you solve the following problems. 1. Frances has a collection of 672 stamps. She wants to place the stamps in 2 envelopes .Can she place the same number of stamps in each envelope? 2. The number of books in Karla’s collection is divisible by 2,5 and 10. She has more than 11 books and fewer than 25 books. How many books does Karla have?

16. Apply your skills Use divisibility rules to help you solve the following problems. 1. Frances has a collection of 672 stamps. She wants to place the stamps in 2 envelopes .Can she place the same number of stamps in each envelope? Yes. Using the divisibility rule for 2, Frances can place the same number of stamps in each envelope (2 envelopes). Because the last digit of the number of stamps (672) is 2.

17. Apply your skills Use divisibility rules to help you solve the following problems. 2. The number of books in Karla’s collection is divisible by 2,5 and 10. She has more than 11 books and fewer than 25 books. How many books does Karla have? Using divisibility rules for 2, 5, and 10 and the statement that the number of books is more than 11 and fewer than 25 books we will know how many books does Karla have. From 12 to 24, we can tell that number 20 is the only number divisible to 2, 5 and 10. Thus, Karla has 20 books.

18. Is this number divisible by 2, 5, and 10? 12 2 only 19 no 13 no 20 2, 5, and 10 14 2 only 21 no 15 5 only 22 2 only 16 2 only 23 no 17 no 24 2 only 18 2 only From 12 to 24, we can tell that number 20 is the only number divisible to 2, 5 and 10. Thus, Karla has 20 books.

19. See you on the next lesson classmates! Please like and subscribe on my social media.