Module 2 Vocabulary Cards Flashcards
additive inverse - Lesson 3
The additive inverse of a number is a number such that the sum of the two numbers is 0. The additive inverse of a number (x) is the opposite of (x) since (x) + (-x) = 0.
bar notation - Lesson 20
A common notation for repeating a decimal expansion is a bar notation. The bar is placed over the shortest block of repeating digits after the decimal point.
rational number - Lesson 18
A rational number is any number that can be written in the form p/q, where p and q are integers and q does not equal 0.
repeating decimal - Lesson 20
A decimal is repeating if, after a certain digit, all remaining digits consist of a block of one or more digits that repeat indefinitely.
terminating decimal - Lesson 19
A terminating decimal is a decimal that can be written with a finite number of nonzero digits.
zero product property - Lesson 13
The zero product property states that if the product of two numbers is zero, then at least one of the numbers is zero.
absolute value
How far a number is from zero.
associative property - addition
Changing the grouping of addends doesn’t change the sum.
associative property - multiplication
Changing the grouping of factors doesn’t change the product.
commutative property - addition
Changing the order of addends doesn’t change the sum.
commutative property - multiplication
Changing the order of factors doesn’t change the product.
distributive property
The Distributive Property says that multiplying a number by a group of numbers added together is the same as doing each multiplication separately.
equation
An equation says that two things are equal.
It will have an equals sign “=” like this:
7 + 2 = 10 − 1
That equation says: what is on the left (7 + 2) is equal to what is on the right (10 − 1)
So an equation is like a statement “this equals that”
expression
Numbers, symbols and operators (such as +, -, and ×) grouped together that show the value of something.
integer
A number with no fractional part (no decimals).
