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2, 3, 4, 5, 6, 9, 10 “Divisible BY” What does it mean?

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Presentation on theme: "2, 3, 4, 5, 6, 9, 10 “Divisible BY” What does it mean?"— Presentation transcript:

1

2 2, 3, 4, 5, 6, 9, 10

3 “Divisible BY” What does it mean?

4 “Divisible by” means: If you divide one number by another, the result is a whole number WITHOUT a remainder. Examples: 12 ÷ 6 = 2 No remainder 15 ÷ 5 = 3 No remainder

5 Divisibility Rule 2 A number is divisible by 2 if the last digit is even. (0, 2, 4, 6, 8) Examples: Review Even numbers: ghosteven ghosteven

6 Now You Try: Which number IS NOT divisible by 2? Need More Practice: Numbers Divisible by 2Numbers Divisible by 2

7 WONDERFUL

8 It ends in a 0, 2, 4, 6, or 8.

9 Divisibility Rule 3 A number is divisible by three if the sum of the digits is divisible by 3. Examples: = ÷ 3 = 4 No Remainder = ÷ 3 = 6 No Remainder

10 Now You Try: Which number IS NOT divisible by 3? Need More Practice: Numbers Divisible by 3Numbers Divisible by 3

11 The sum is divisible by 3.

12 WONDERFUL

13 Divisibility Rule 4 A number is divisible by 4 if the last two digits are divisible by 4. Examples: ÷ 4 = ÷ 4 = 18

14 Now You Try: Which number IS NOT divisible by 4? Need More Practice: Numbers Divisible by 4Numbers Divisible by 4

15 WONDERFUL

16 The last 2 digits are divisible by 4.

17 Divisibility Rule 5 A number is divisible by 5 if the last digit is a 0 or 5. Examples: 615ends in a ends on a 0

18 Now You Try: Which number IS NOT divisible by 5? Need More Practice: Numbers Divisible by 5Numbers Divisible by 5

19 The number ends in a zero or a five.

20 Wonderful

21 Divisibility Rule 6 A number is divisible by 6 when it is divisible by 2 AND 3. (prime numbers) Examples: 408ends in an even number (2 rule) sum of the digits is divisible by 3 Review prime and composite numbers: Prime and Composite Numbers Prime and Composite Numbers Prime and Composite Numbers

22 Now You Try: Which number IS NOT divisible by 6? Need more practice? Numbers Divisible by 6 Numbers Divisible by 6Numbers Divisible by 6

23 Way To Go!!

24 This number is divisible by 2 and 3.

25 Divisibility Rule 9 A number is divisible by 9 if the sum of the digits is divisible by 9. Examples: = ÷ 9 = =18 18 ÷ 9 =2

26 Now You Try: Find the number that IS NOT divisible by Need More Practice: Numbers Divisible by 9 and 10 Numbers Divisible by 9 and 10Numbers Divisible by 9 and 10

27 The sum of the digits is divisible by 9.

28 Great Job!!!

29 Divisibility Rule 10 A number is divisible by 10 is it ends in a ZERO. Example: 7630ends in a zero 410ends in a zero 410ends in a zero

30 Now You Try: Find the number that IS NOT divisible by ten. 56,

31 The number ends in a ZERO.

32 Way To Go!!

33 Congratulations! Complete two of the three assignments. You may complete them on your computers but print out your answer sheet. Assignment 1.doc Assignment 1.doc chart.doc assignment3.doc

34 Now that you have completed your two assignments, feel free to go to the following sites. THEY ARE SOOOOO MUCH FUN!!!!!! Fractions vectorkids -divisibility rules Gamequarium Division Games Fractions vectorkids -divisibility rules Gamequarium Division Games Fractions vectorkids -divisibility rules Gamequarium Division Games


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