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Math Ex: Unit 2 - 2017-2018

Terms in this set (25)

Greater than or equal to
The symbol ≥ , or a number that is the same as or above another number. Example 8 ≥ 7
Less than or equal to
≤ ; or a number that is the same as or below another number. Example 5 ≤ 10
Increase
To make something bigger (in size or quantity).
Decrease
Make something smaller (in size or quantity).
Less Than
The symbol < , Smaller. Example: 4 < 9
Greater Than
The symbol > , Bigger. Also, Example: 5 > 3
Less Than (In a word problem, Six LESS THAN eight)
To subtract from
More Than (In a word problem, Six MORE THAN eight)
To add to
Compare
Determining if a number is equal to, greater than, or less than another number.
Numerator
The top number in a fraction.
Denominator
The bottom number in a fraction.
Fraction Bar
The line between the top and bottom numbers in a fraction; separates the numerator and denominator of a fraction.
Improper Fraction
A fraction in which the numerator is greater than or equal to the denominator.
Proper Fraction
A fraction with a numerator less than the denominator.
Mixed Number
A whole number with a fraction.
Percent
Out of 100. One part in every hundred.
Mode
The number that happens the "most" in a set of data. Line the numbers up in ascending order and determine which one happens the most times. 1, 2, 3, 5, 1, 2, 1, 4, 1 = Ascending order = 1, 1, 1, 1, 2, 2, 4, 5 Answer: 1 (because there are four 1's).
Median
The "middle" number of a set of data. Line the numbers up in ascending order and determine which one is in the middle of the data. 4, 2, 5, 7, 1 =
Arrange in Ascending = 1, 2, "4", 5, 7. The "middle" one is "4." If there are two "middle" numbers, add them together and divide by 2.
Mean
The "average" of the sum of the data: computed by adding the values in a list and then dividing by the number of values in the list. 3 + 4 + 5 = 12 12 / 3 = "4"
Equivalent
Having the same value. Examples: 1 Dollar = to 100 cents 120 seconds = 2 minutes
Equation
A mathematical phrase that contains operations, numbers and/or variables, AND an equal sign.
Expression
A mathematical phrase that contains operations, numbers and/or variables, but no equal sign.
Estimate
Approximately - roughly equal to.
Approximately
to round ; to estimate; or the symbol ~
Range
The difference between the highest value number and the lowest value number in a set of data. Line up the numbers in ascending order and determine which has the greatest and least value, subtract the least from the greatest. 1, 2, "4", 5, 7 = Greatest = 7 Least = 1 ....... 7 - 1 = 6... 6 is correct.
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