Friday, 21 September 2012

Friday, September, 21, 2012.

Natural Numbers - counting numbers.
        ex; 1, 2, 3, 4, 5, 6, 7, 8, 9,10...
            Does not include - zero, negatives, decimals, fractions.

Whole Number Set - 0 plus natural numbers.
        ex; 0, 1, 2, 3, 4, 5, 6, 7, 8, 9...
            Does not include - negatives, decimals, fractions.

Integers - positive and negatives - whole numbers.
        ex; ...-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5...
            Does not include - decimals. 

Rational Set of Numbers - any number that can be written as a terminating or repeating decimal.

Irrational Set of Numbers - can not be written as a terminating or repeating number.
        ex; Pi π

(Baskets example goes here)

(Chocolate bars example goes here)

But Wait ... There's More!

Even - any number evenly divisible by 2.
        ex; 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20...

Odd - any number that can not be divide by 2.
        ex; 1, 3, 5, 7, 9, 11, 13, 15, 17, 19...

Factors - are the numbers that multiply together to produce a product.
        ex; what are the factors of 12. 
                             1*12, 2*6, 3*4 are all factors of 12.

Prime Factors - When we find the factors of a number so that all of those factors are prime numbers.
        ex; find the prime factors of 125 - 5*5*5.

What are the factors of the factors of the following numbers.
1. 144 - 1*144, 2*72, 3*48, 4*36, 6*24, 8*18, 12*12.

2. 225 - 1*225, 3* 75, 5*45, 9*25, 15*15.

3. 81 - 1*81, 3*27, 9*9.

Don't forget about the quiz on Tuesday
Review on Monday

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