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Uploaded byDonna Furrey
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Divisability Rulesppt

The document explains the divisibility rules for numbers 2 through 10. It states that a number is divisible by a certain number if the remainder is 0 when dividing one number by the other. It then provides examples and explanations of the divisibility rules for each number.

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Divisibility Rules 2 3 4 5 6 9 10
What does it mean? "Divisible by . . ."
If you divide one number by another, the result is a whole number WITHOUT a remainder. Examples: 21 ÷ 7 = 3 No remainder 56 ÷ 2 = 28 No remainder "Divisible by" means . . .
A number is divisible by 2 if the last digit is even . (0, 2, 4, 6, 8) Examples: 6 4 49,82 2 Divisibility Rule for 2
Which number IS NOT divisible by 2? 684 2788 103 Now, You Try!
Wonderful !
It ends in a O, 2, 4, 6 or 8
A number is divisible by three if the sum of the digits is divisible by 3. Examples: 81 8 + 1 = 9 9 ÷ 3 = 3 No Remainder 231 2 + 3 + 1 = 6 6 ÷ 3 = 2 No Remainder Divisibility Rule for 3
Which number IS NOT divisible by 3? 642 1644 729 Now, You Try
The sum is divisible by 3
Wonderful !
A number is divisible by 4 if the last two digits form a number that is divisible by 4. Examples: 38 20 20 ÷ 4 = 5 6 72 72 ÷ 4 = 18 Divisibility Rule for 4
Which number IS NOT divisible by 4? 112 5610 488 Now You Try
Wonderful !
The last 2 digits form a number divisible by 4
A number is divisible by 5 if the last digit is a 0 or 5 . Examples: 32 5 ends in a 5 347 0 ends on a 0 Divisibility Rule for 5
Which number IS NOT divisible by 5? 6520 657 465 Now, You Try
The number ends in 0 or 5
Wonderful !
A number is divisible by 6 when it is divisible by 2 AND 3 . (prime numbers) Examples: 204 ends in an even number (2 rule) sum of the digits is divisible by 3 Divisibility Rule for 6
Which number IS NOT divisible by 6? 7800 427 5502 Now, You Try
Way To Go !
This number is divisible by 2 and 3
A number is divisible by 9 if the sum of the digits is divisible by 9. Examples: 351 3 + 5 + 1 = 9 9 ÷ 9 = 1 3555 4 + 5 + 5 + 5 =18 18 ÷ 9 =2 Divisibility Rule for 9
Find the number that IS NOT divisible by 9. 9873 693 5541 Now, You Try
The sum of the digits is divisible by 9
Great Job !
A number is divisible by 10 is it ends in a ZERO. Example: 456 0 ends in a zero 431 0 ends in a zero Divisibility Rule for 10
Find the number that IS NOT divisible by ten. 47,870 5892 458 Now, You Try
The number ends in 0
Way To Go !
Grab a piece of paper and check how well you know the rules. Try It Out 456 – 2 3 4 5 6 9 10 801 – 2 3 4 5 6 9 10 55,602 – 2 3 4 5 6 9 10 51 – 2 3 4 5 6 9 10 381 – 2 3 4 5 6 9 10
Grab a piece of paper and check how well you know the rules. Try It Out 456 – 2 3 4 5 6 9 10 801 – 2 3 4 5 6 9 10 55,602 – 2 3 4 5 6 9 10 51 – 2 3 4 5 6 9 10 381 – 2 3 4 5 6 9 10