Place Value Review

standard form

A number in its normal state using digits. For example, 125

rounding

______________ is a process that determines which multiple of 10, 100, 1000, and so on, a number is closest to.

less than

(<) is the symbol used to compare two numbers, with the smaller number given first (ex. -6 < +9--this means that -6 is less than +9).

greater than

(>) is the symbol used to compare two numbers, with the greater number given first (ex. +9 > -6--this means that +9 is greater than -6). In a number sentence, a symbol that points away from the greater number or expression.

decimal point

A dot used to separate dollars from cents in money or separate ones from tenths in a number is called a

fraction

A number used to name a part of a group or a whole. The number below the bar is the denominator, and the number above the bar is the numerator.

decimal

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

expanded form

A number written as the sum of the values of its digits. example 2,000+400+70+6

expanded notation

A way of writing numbers in which the numbers are written to show the place value of each digit (639 = 600 + 30 + 9)

whole numbers

All numbers excluding negatives and decimals

equivalent

Equal in quantity, meaning, or value

period

In a number, a period is a group of three digits, separated by commas, starting from the right.

billions

In a number, a period of three places to the left of the millions period. (100,000,000,000)

millions

In a number, a period of three places to the left of the thousands period. (100,000,000)

order

Numbers are arranged in ascending or descending order.

hundredths

One part of 100 equal parts of a whole. The second number to the right of a decimal

tenths

The first place value after a decimal point. Is the largest decimal value. It takes 10 tenths to make a whole.

value

The numerical worth of an object is known as its value.

place value

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

word form

The value of a number written in words.

ones

The value one place to the left of the decimal point.

hundreds

The value three places to the left of the decimal point. (100)

thousands

The value three places to the left of the hundred period. (100,000)

tens

The value two places to the left of the decimal point.

compare

To decide if one number is greater than, less than, or equal to another. Give an account of similarities and differences between two (or more) items, referring to both (all) of them throughout.

equal to

(=) the same

digit

One of the written signs that represent the numbers from 0 to 9