Go Math Chapter 1 Vocabulary

A way to write numbers by showing the value of each digit.

Example: 2,301 = 2,000 + 300 + 1

• word form

• expanded form

• standard form

• period

• estimation

To replace a number with another number that tells about how many or how much...

• round

• inverse operation

• thousands

• product

• expanded form

A number that is close to an exact amount. An estimate tells about how much or about how many

• inverse operation

• equality

• estimation

• word form

A group of three digits in a multi-digit number; usually separated by commas or spaces.

Example: 956,452,124 has three _______.

*MAKE SURE YOU SPELL CORRECTLY! LOOK BACK AT YOUR CARDS IF YOU NEED TO.

Operations that undo each other, such as addition and subtraction or multiplication and division.

Example: 6 X 8 = 48 and 48  $\div$  6 = 8

• addition problem

• thousands

• period

• inverse operation

A way to write numbers by using the digits 0-9 with each digit having a place value

Example: 5,548

• expanded form

• word form

• standard form

• estimation

The period after the ones period in the base-ten number system.

• ones period

• thousands period

• millions period

• billions period

A way to write numbers using words.

Example: three thousand, four hundred sixty-two

• standard form

• word form

• expanded form

• period

The value of each digit in a number.

• Place Value

• Round

• Compare

• Number Line

Which characteristics describes a period?

• Group of three digits

• Punctuation at the end of a sentence

• Separated by commas

• Starts from the right