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Math X: Vocabulary Part 4
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Terms in this set (32)
Ratio
The relationship between two numbers; 4:3, 4/3, 4 to 3
the "nth" term
The answer to the "x" position in a number sequence. For example the 5th position in the sequence 2, 4, 6, 8, 10, 12.... is 10 since it is the 5th number in the sequence.
Pattern
A number sequence that follows a given rule, for example: 2x = 2, 4, 6, 8...... the rule is which ever number in the sequence you are on, multiply it by 2.
Integer
a positive or negative whole number; a number that is not a fraction.
Absolute Value
Measures the distance a number is away from 0. |-4| or |4| = 4.
Negative
Any number less than "0".
Sea Level
The level of the ocean's surface, used in reckoning the height of geographical features such as hills or the ocean floor. (20 feet below, -20 feet).
Credit
A value above "0", usually referred to an amount of money above 0. A profit!
≤ ; or a number that is the same as or below another number.
Less than or equal to
≥ ; or a number that is the same as or above another number.
Greater than or equal to
exponent
The small number to the right of the base that tells how many times the base is multiplied by itself.
base
The large number to the left of the exponent that is being repeatedly multiplied.
Approximately
to round ; to estimate; or the symbol ~
Compare
Determining if a number is equal to, greater than, or less than another number.
Scientific Notation
A method of expressing numbers in terms of a decimal number between 1 and 10 multiplied by a power of 10. For example: 10,492 is written as 1.0492 × 10 to the 4th power.
Tenths Place
The place value in a number that is one slot behind the decimal. Example: ".1"
Hundredths Place
The place value in a number that is two slots behind the decimal. Example: ".01"
Thousandths Place
The place value in a number that is three slots behind the decimal. Example: ".001"
Prime Number
A number that has exactly two factors - 1 and itself.
Composite Number
A number with more than two factors.
Geometric Sequence
a series of numbers where each term after the first is found by multiplying the previous one by a fixed, non-zero number called the common ratio.
Arithmetic Sequence
a series of numbers where each term after the first is found by adding the previous one by a fixed, non-zero number called the common difference.
Profit
An amount of something gained, to increase. Usually used in terms of money. The amount of Credit above "0."
Loss
An amount that has been taken away or decreased. Usually referred in terms of money.
Debt
An amount of money that is below zero.
Standard Form
A way of writing down very large or very small numbers easily, usually referring to the answer of a scientific notations number written out.
Estimate
Approximately, roughly equal to, rounding.
Common Difference
The amount numbers in a sequence are changing by in an Arithmetic Sequence.
Common Ratio
The amount numbers in a sequence are changing by in an Geometric Sequence.
Independent Event
The probability that one event occurs in no way affects the probability of the other event occurring. An example... Flipping a coin and rolling a number cube.
Dependent Event
The probability that the outcome or occurrence of the first event affects the outcome or occurrence of the second event so that the probability is changed. An example.... drawing a Reese's from a candy jar filled with 10 different candy bars will effect the probability of drawing another Reese's candy bar.
Consecutive Numbers
Numbers which follow each other in order, without gaps, from smallest to largest. Example: 1, 2, 3, 4
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