Unit 5 Vocabulary

a method for estimating a group of numbers by slightly adjusting some or all of the numbers to allow for easy mental computation

• Decimal Number

• Quotient

• Compatible Numbers

• Expression

a number in the base-10 place value system used to represent a quantity that may include part of a whole and is recorded with a decimal point separating the whole from the part

• Decimal Number

• Dividend

• Factor

• Front-end Method

the number that is being divided

• Front-end method

• Dividend

• Estimation

• Expression

the number the dividend is being divided by

• Compatible Number

• Product

• Factor

• Divisor

reasoning to determine an approximate value

• Estimation

• Quotient

• Expression

• Decimal Number

a mathematical phrase, with no equal sign or comparison symbol, that may contain a number, an unknown, and/or an operator

• Dividend

• Expression

• Compatible Numbers

• Front-end Method

a number multiplied by another number to find a product

• Estimation

• Dividend

• Quotient

• Factor

a method for estimating a number in which the first digit of a number is retained and all remaining digits are changed to zero

• Product

• Decimal Number

• Front-end Method

• Expression

the total when two or more factors are multiplied

• Product

• Quotient

• Divisor

• Dividend

the size or measure of each group or the number of groups when the dividend is divided by the divisor

• Compatible Numbers

• Quotient

• Estimation

• Decimal Number