Extending Thinking to Decimals Vocabulary

Addends can be regrouped and the sum remains the same.

• Commutative Property of Addition

• Associative Property of Addition

• Compatible Numbers

• Compensation

Common decimals used for estimating.

• Commutative Property of Addition

• Associative Property of Addition

• Compatible Numbers

• Benchmark Decimals

The order of addends can be changed and the sum remains the same.

• Commutative Property of Addition

• Associative Property of Addition

• Benchmark Decimals

• Compatible Numbers

Numbers that are easy to compute mentally.

• Compatible Numbers

• Commutative Property of Addition

• Benchmark Decimals

• Associative Property of Addition

Adjusting a number to make a computation easier and balancing the adjustment by changing another number.

• Associative Property of Addition

• Commutative Property of Addition

• Compatible Numbers

• Compensation

A number with one or more digits to the right of the decimal point.

• Equation

• Compensation

• Decimal

A mathematical relation statement where two equivalent expressions

and values are separated by an equal sign.

• Decimal

• Compensation

• Equivalent Decimals

• Equation

Decimals that name the same amount.

• Equivalent Decimals

• Expression

• Expanded Form

• Equation

A way to write a number.

• Equivalent Decimals

• Expression

• Expanded Form

• Equation

A mathematical statement

containing numerals, operators, grouping symbols and symbols or variables for unknown values. An expression does not contain an equal sign or inequality symbol.

• Hundredths

• Inverse Operation

• Expression

• Rounding