Module 1: Basic numeracy and calculation skills Flashcards
Composite number
A number with more factors than just one and itself
data
a set of qualitative or quantitative variables; pieces of data are individual pieces of information
square root
a number that produces a specified number when it is multiplied by itself
commutative
The property that the order of the numbers under the operation does not change the result. Addition and multiplication are commutative; a + b=b + a
expressions
a string of terms that are connected by division, addition, and subtraction operations
sum
The result of multiple numbers being added together.
positive number
A number whose value is greater than zero. On the number line, positive numbers are to the right of zero.
associative property
The associative property holds that under certain operations in a multi-step expression, the computations may be done in any order. Commonly represented as (a + b) + c = a + (b + c). Addition and multiplication are associative.
superscript
A symbol (such as a number or letter) written above and immediately to the left or right of another character.
factor
An integer that divides another integer. We say an integer, x, is a factor of another integer, y, if the quotient y/x is also equal to an integer.
interval
A set of numbers between two specified values.
negative number
A number whose value is less than zero. On the number line, negative numbers are to the left of zero.
multiplicative inverse
The multiplicative inverse of a number x is the number you must multiply x by to get 1. For example, 5 and 1/5 are multiplicative inverses.
parentheses
In mathematics, parentheses () are used to separate operations within an expression. Any operations that lie within parentheses should be performed first.
negative square root
The negative square root of a perfect square. For example, -6 is the negative square root of 36.
principal square root
The positive square root of a number. For example, the principal square root of 36 is 6.