Math Grade 3, Unit 1, Segment 1

Front 1

place value

Back 1

the value assigned to each place in a number written in standard form

Front 2

digit

Back 2

any of the symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

Front 3

round

Back 3

to express a number as the nearest ten, hundred, thousand, or other place value

Front 4

estimate

Back 4

a number close to an exact amount; to find about how many

Front 5

standard form

Back 5

a way of writing numbers by only using digits

Front 6

word form

Back 6

the form of a number that is written using words

Front 7

expanded form

Back 7

a way of writing a number as the sum of the value of its digits

Front 8

ten

Back 8

A group of 10 ones.
The digit to the left of the ones place.

Front 9

hundred

Back 9

A group of 10 tens or 100 ones.
The digit to the left of the tens place.

Front 10

thousand

Back 10

10 hundreds, 100 tens, 1000 ones
The place to the left of the hundreds place.