Intro to Decimals Vocabulary

Whole Numbers

0,1,2,3,4...

Expression

A mathematical phrase without an equal sign.

Expanded Form

A way to write numbers by showing the value of each digit; 10 + 1 + 0.7 + 0.03

Word Form

A way to write numbers by using words.

Place Value holder

A zero is placed when the two decimal numbers do not have the same amount of digits while adding or subtracting

Greater than

Greater than is used to compare two numbers when the first number is larger than the second number; >

Less than

Less than is used to compare two numbers when the first number is smaller than the second number; <

Tenths

The first place value after a decimal point; 0.1

Hundredths

The second place value after a decimal point, 0.01

Thousandths

The third place value after a decimal point, 0.001

Place value

The value of a digit based on its position within a number

Decimal Number

a number that uses a decimal point to show tenths, hundredths, and thousandths

Expanded Notation

a way to write numbers that shows the value of each digit; (1x10) + (3x1) + (5x0.1) + (9x0.01)

Digit

any number from 0 to 9

Equivalent

having the same value; equal to

Inequality

not equal

Estimation

reasoning to determine an approximate value

Difference

the answer to a subtraction problem

Sum

the answer to an addition problem