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November 27, 2014

November 27, 2014

Posted by **Sam** on Monday, September 9, 2013 at 1:41pm.

a) 4320 can be divided be divided by 2,5,10 evenly. How?

b)can 4230 be divided by 3 and 9?

c) can 98,022 be divided by 2,3,5,9,10? use divisibility rules.

I need help with these questions please i summed it up a little bit.

- Math -
**Jai**, Monday, September 9, 2013 at 1:50pm(a)

If the number is even, it is divisible by 2.

If the number ends with 0 or 5 (the last digit), it is divisible by 5.

If the number ends with 0, it is divisible by 10.

(b)

If the sum of the digits of a number is divisible by 3, it is divisible by 3. For instance, 4320: 4+3+2+0 = 9, and 9 is divisible by 3.

If the sum of the digits of a number is divisible by 9, it is divisible by 9. For instance, 4320: 4+3+2+0 = 9, and 9 is divisible by 9.

(c) Is 98022 divisible by

i. 2 ? -> Yes, cause it's even.

ii. 3 ? -> 9+8+0+2+2 = 21, and 21 is divisible by 3, so yes.

iii. 5 ? -> No it's not, cause it does not end with 0 or 5.

iv. 9 ? -> 9+8+0+2+2 = 21, and 21 is not divisible by 9, so no.

v. 10 ? -> No it's not, cause it does not end with 0.

Hope this helps~ :)

- Math -
**Sam**, Monday, September 9, 2013 at 2:23pmThanks so much! it helped alot :D

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