Divisibility lesson unit 1 grade six.pptx

Divisibility for numbers 2,3,4,5,6,10

1. Divisibility

2. 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 number with no remainder, decimal, or fraction. We will learn rules for 2, 3, 4, 5, 6, and 10.

3. Divisibility Rule for 2 A number is divisible by 2 if… The number is even. Even numbers end in 2, 4, 6, 8, or 0. Examples 412 230 516

4. Divisibility Rule for 10 A number is divisible by 10 if… The number ends in a zero. Examples 4,000 210 50

5. Divisibility Rule for 5 A number is divisible by 5 if… The number ends in a 5 or 0. Examples 4,000 215 355

6. Divisibility Rule for 3 A number is divisible by 3 if… The sum of the digits of the number is divisible by 3. Examples 354 3 + 5 + 4 = 12 12 ÷ 3 = 4 9,363,129 9 + 3 + 6 + 3 + 1 + 2 + 9 = 33 33 ÷ 3 = 11

7. Divisibility Rule for 6 A number is divisible by 6 if… The number is divisible by both 3 and 2. Examples 930 6000 216

8. Divisibility Rule for 4 A number is divisible by 4 if… The last 2 digits of the number is divisible by 4. Examples 9,2 64 1,209,1 24 2 16

9. Divisibility Rules A number is divisible by: 2 if the number is even. 3 if the sum of the digits is divisible by 3. 4 if the last 2 digits of the number are ÷ by 4. 5 if the number ends in a 5 or 0. 6 if the number is divisible by 2 and 3. 10 if the number ends in a 0.

10. What number(s) is the number below divisible by? 75 3 and 5

11. What number(s) is the number below divisible by? 111 3

12. 2,848 2, 4 What number(s) is the number below divisible by?

13. What number(s) is the number below divisible by? 9,540 2, 3, 4, 5, 6, and 10

14. What number(s) is the number below divisible by? 144 2, 3, 4, 6