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# UNIT 1 VOCABULARY

### Numbers in Base 10 Vocabulary Words

base ten a ten-digit number system that uses place value to record numbers
place value the value of a digit that depends on the digit's position in a number; ones, tens, hundreds, and so on
decimal number a number written in base ten
tenth one part of a whole that has been divided into 10 equal parts
hundredth one part of a whole that has been divided into 100 equal parts
thousandth one part of a whole that has been divided into 1000 equal parts
expanded form a way to show the value of each digit in a number
exponent the number in a power that tells how many times to use the base as a factor
power of ten a number that can be written as a product of tens
inverse the opposite of something
expression a group of numbers and symbols that shows a mathematical relationship
compare to determine if one value is greater than, equal to, or less than another
division an operation used to find the number in each group or the number of groups in equal-sized groups
multiplication an operation used to find the total number of items in equal-sized groups
partial product the result of multiplying the value in one place of a two- or three- digit number
factor a number that is multiplied by another number
product the result of multiplication
dividend the number being divided in a division problem
divisor the number being divided into a dividend in a division problem
quotient the result of division
estimate to find an answer that is close to the exact answer by rounding or using compatible numbers
difference the result of subtraction
sum the result of addition
standard algorithm a step-by-step method for computing
Created by: mmshornet