Topic 8 Vocabulary

Front

What is the Commutative (Order) Property of Addition?

Back

Numbers can be added in any order and the sums are the same.

Front

What is the Identity (Zero) Property of Addition?

Back

The sum of any number and zero is that number.

Front

What is the Associative (Grouping) Property of Addition?

Back

Addends can be regrouped and the sum remains the same.

Front

What does it mean to Round a number?

Back

You use the multiple of ten or hundred that is nearest to the number.

Front

What is an Open Number Line?

Back

It only displays the numbers being computed.

Front

What is Estimation in math?

Back

A way to find a number that is close to the exact answer.

Front

What is Mental Math?

Back

Doing calculations in your head without writing anything down.

Front

What is Place Value?

Back

The value of where a digit is in a number.

Front

Give an example of the Commutative Property: 3 + 5 = ?

Back

5 + 3 = 8, both sums are the same.

Front

Give an example of the Identity Property: 7 + 0 = ?

Back

7 + 0 = 7, the number stays the same.