Topic 8 Vocabulary

Front

What do you do when you use the multiple of ten or hundred that is nearest to the number?

Back

Round

Front

What property allows addends to be regrouped while keeping the sum the same?

Back

Associative (Grouping) Property of Addition

Front

What does it mean to give an approximate number?

Back

Estimate

Front

What are two operations that undo each other called?

Back

Inverse Operation

Front

What only displays the numbers being computed?

Back

Open Number Line

Front

What is the property that states that changing the order of addends does not change the sum?

Back

Commutative (Order) Property of Addition

Front

What is the property that states that adding zero to a number does not change the number?

Back

Identity (Zero) Property of Addition

Front

What is a way to find a number that is close to the actual number, often used in math?

Back

Estimate

Front

What is the term for numbers that can be easily added or subtracted?

Back

Compatible Numbers

Front

What is a visual representation of numbers on a line called?

Back

Open Number Line