Numbers And Properties

Question 1

Is zero an integer?

Answer 1

Yes

Question 2

Divisibility rules 2,3,4,5,6,9,10,12

Answer 2

2 - It's even.
3 - Its digits add up toa  multiple of 3.
4 - Its last two digits are divisible by 4.
5 - Its last digit is 5 or 0.
6 - Apply the rules of 2 and 3.
9 - Its digits add up to a multple of 9
10 - the last digit is a zero.
12 - Apply the rules of 3 and 4.

Question 3

Positive integers that are not a perfect square have ____ # of factors, perfect squares have _____.

Answer 3

even, odd

Question 4

GCF(x,y)=

Answer 4

pf^min(a,b) * pf^min(a,b) * pf^min(a,b)…..

Question 5

LCM(x,y)=

Answer 5

pf^max(a,b) * pf^max(a,b) * pf^max(a,b)…..

Question 6

How to find the # of factors for an integer

Answer 6

1. Write prime factors in exponent form
2. Add 1 to each exponent
3. Multiply the sums together