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Math Word Problems - GED, PSAT, SAT, ACT, GRE Preparation
3.4 Divisibility Review

Rules for Divisibility
A whole number is divisible by 2 if it is even number that is if it has 0, 2, 4, 6, 8 in ones place.
A whole number is divisible by 3 if the sum of the digits is divisible by 3.
A whole number is divisible by 4 if the number formed by the last two digits is divisible by 4.
A whole number is divisible by 5 if the number contains 5 or 0 in the ones place.
A whole number is divisible by 6 if the number is divisible by 2 and 3
A whole number is divisible by 7 if the number in the ones place is doubled and this is subtracted from the remaining numbers, the result has to be a multiple of 7
A whole number is divisible by 8 if the numbers formed by the last three digits is divisible by 8.
A whole number is divisible by 9 if the sum of the digits is divisible by 9.
A whole number is divisible by 10 if the number has 0 in ones place.
A whole number is divisible by 11 if the difference of the numbers obtained on adding the alternate digits of the numbers separately is divisible by 11.

Example: Is 32 divisible by 5?
For a number to be divisible by 5, it should end with 0 or 5.
Answer: 32 is not divisible by 5.

Directions: Choose the correct answer. Also write at least 10 examples of your own.
Q 1: Is 976 divisible by 7?
Yes
No

Q 2: Is 32625 divisible by 9?
No
Yes

Q 3: Is 8476 divisible by 6?
No
Yes

Q 4: Is 5600 divisible by 4?
Yes
No

Q 5: Is 1762 divisible by 8?
No
Yes

Q 6: Is 3789 divisible by 3?
Yes
No

Question 7: This question is available to subscribers only!

Question 8: This question is available to subscribers only!


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