Transcript Positive Rational Numbers

UNIT 1: NUMERICAL UNDERSTANDING:
Integers and Positive Rational Numbers
1. Integers: whole numbers and their opposites.
EXAMPLES: 0, 5, 17 and -334, -15, -5 etc.
2.Perfect Square: the product of squaring a whole number.
EXAMPLES: 1, 4, 9, 16, ____, _____....
3.Rational Numbers: numbers that can written as a ratio. They can be named as
fractions or decimals. They include integers and terminating or repeating decimals.
EXAMPLES: .978, .323232, -6, 4/5 etc…
4. Positive Rational Numbers: the set of numbers that includes whole numbers,
positive fractions, and positive decimals.
EXAMPLES: .978, 57, 1.25, 1 ¼ etc…
5.Square Number: the product when a number is multiplied by itself.
EXAMPLES: 4 because 2 x 2 = 4 and 81 because 9 x 9 = 81 and so on!
6.Square Root: a factor of a number that, when squared, equals the original number.
EXAMPLES: 2 is the square root of 4. 9 is the square root of 81.
UNIT 1 continued
7. Ascending: increasing from least to greatest. To count upward.
EXAMPLE: 1, 5, 13, 40, 53…
8. Descending: decreasing from greatest to least. To count downward.
EXAMPLE: 101, 90, 87, 72, 56…
9. Order of Operations: a set of rules agreed upon by mathematicians that outline the
to take when solving multioperational problems.
P – parentheses, E – exponents, M or D – multiply or divide from left to right,
A or S – add or subtract from left to right.
EXAMPLE: 9 – 3 + 2 x 6
9 – 3 + 12
6 + 12
18
10. Percent: 1out of 100. one-hundredth.
11. Deposit usually an amount of money placed or added to an account.To place or put
EXAMPLES: deposit $100 : +100
or “just deposit your books on the table”
12. Withdrawal: usually an amount of money removed or taken out of an account.
EXAMPLES: withdrawal of $99: -99