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Презентация была опубликована 2 года назад пользователемЛев Языков

2 Ways to Check for Divisibility Vüsal Abbasov

3 Dividing By 1 All numbers are divisible by 1

4 Now You Try Are these numbers divisible by 1? a)578 b)398 c)48 d)1903 e)490

5 Dividing by 2 All even numbers are divisible by 2 Even numbers are numbers that end with either 2, 4, 6, 8, or 0

6 Now You Try Are these numbers divisible by 2? a)458 b)1279 c)759 d)555 e)1050

7 Dividing by 3 Add up the digits of the number If that number is divisible by 3, then the original number is If your sum is still a big number, continue to add the digits

8 Dividing by For example, take the number If that number is divisible by 3, then the original number is If your sum is still a big number, continue to add the digits Add up the digits of the number 7+3+8= 18 Is 18 divisible by 3? = 9 Is 9 divisible by 3?

9 Now You Try Are these numbers divisible by 3? a)639 b)56 c)86 d)360 e)468

10 Dividing by 4 If the last 2 digits together are divisible by 4

11 Now You Try Are these numbers divisible by 4? a)584 b)261 c)56 d)920 e)767

12 Dividing by 5 If the number ends in 5 or 0

13 Now You Try Are these numbers divisible by 5? a)554 b)6890 c)345 d)902 e)845

14 Dividing by 6 If the number is divisible by 2, and... If the number is divisible by 3

15 Now You Try Are these numbers divisible by 6? a)897 b)258 c)630 d)345 e)84

16 Dividing by 7

17 Now You Try Are these numbers divisible by 7? a)578 b)398 c)48 d)1903 e)490

18 Dividing by 8 If the last three digits are divisible by 8 If the number is divisible by 2, –then by 2 again, and then by 2 again So what type of number does it have to be?

19 Now You Try Are these numbers divisible by 8? a)568 b)396 c)48 d)1903 e)490

20 Dividing by 9 Similar to dividing by 3 Add up digits If that number is divisible by 9 then your number is divisible by 9

21 Dividing by 9 If that number is divisible by 3, then the original number is If your sum is still a big number, continue to add the digits Add up the digits of the number 27 Is 27 divisible by 9? = 9 Is 9 divisible by 9? For example, take the number 924, =

22 Now You Try Are these numbers divisible by 9? a)578 b)398 c)48 d)1903 e)490

23 Dividing by 10 If the number ends with a 0

24 Now You Try Are these numbers divisible by 10? a)578 b)398 c)48 d)1903 e)490

25 Dividing by 11

26 Now You Try Are these numbers divisible by 11? a)578 b)398 c)48 d)1903 e)490

27 REVIEW Divisible by 1 Divisible by 2 Divisible by 3 Divisible by 4 Divisible by 5 Divisible by 6 Divisible by 8 Divisible by 9 Divisible by 10 Divisible by 11

28 Assignment Tell what each number is divisible by, either 2, 3, 4, 5, 6, 7, 8, 9, 10, or 11 1)186 2)85 3)69 4)298 5)747 11) ) ) ) )3487 6)952 7)3650 8)2738 9) )5084

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