Place Value
period
A group of three digits in a number, separated by a comma.
number line
A line that shows numbers in order using a scale.
Expanded Form
A number written as the sum of the values of its digits.
Word Form
A number written in words.
100 times
In the number 1,535 the 5 in the hundreds place is ________ times as much as the 5 in the ones place.
100 times
In the number 72,423 the 2 in the thousands place is ________ times as much as the 2 in the tens place.
100 thousand times
In the number 879,048 the 8 in the ones place is ________ times less than the 8 in the hundred thousands place.
Base Ten System
Our number system is based on groups of ten. Whenever we get 10 in one place, we move to the next greater place.
365,010
Round 365,007 to the nearest tens place.
45,000
Round 44,652 to the nearest thousands place.
900
Round 943 to the nearest hundreds place.
thousands
Ten HUNDREDS. One hundred TENS. One thousand ONES.
hundred thousands
Ten TEN THOUSANDS. One hundred THOUSANDS. One thousand HUNDREDS. Ten thousand TENS. One hundred thousand ONES.
hundreds
Ten TENS. One hundred ONES.
ten thousands
Ten THOUSANDS. One hundred HUNDREDS. One thousand TENS. Ten Thousand ONES.
tens
Ten ones.
greater than
The first number is "larger" than the second number.
less than
The first number is "smaller" than the second number.
equal to
The first number is the "same" as the second number.
ones
The smallest unit of the base-10 system.
digits
The symbols used to write the numbers o, 1, 2, 3, 4, 5, 6, 7, 8, and 9.
Place Value
The value given to a place a digit has in a number.
Standard Form
The way to write a number showing only digits.
compare
To decide if one number is greater than or less than another number.
round
To replace a number with a number that tells about how much or how many to the nearest ten, hundred, thousand, and so on.
Answers vary: 8 hundreds, 1 ten, 6 ones / 816 ones / 8 hundreds, 16 ones / 4 hundreds, 416 ones / etc.
What is another way to express the number 816?
Six hundred ninety-eight
What is the number 698 written in word form?
9,000+600+10+2
What is the number 9,612 written in expanded form?
43,203
What is the number forty-three thousand, two hundred three written in standard form?
Thousands places
What is the place value of the digit 7 in the number 37,058?
400
What is the value of the digit 4 in the number 6,482?
order
When you arrange numbers from least to greatest or from greatest to least.
