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Math Vocabulary

5th grade math vocabulary

Digits The symblos used to show numbers:0,1,2,3,4,5,6,7,8,9,
Standard form A common way of writing a number with commas separting groups of three digits starting from the right. Ex. 3,458
Value The number a digit represents, which is determined by the position of the digit.
Expanded form A way to write a number that shows the place vlaue of each digit. Ex. 3,000+500+20+3
Equivalent decimals Decimals that name the same amount. Ex. 0.7=0.70
Word form A way to write a number using words.
Communtative Property of Addition The order of addends can be changed and the sum remains the same. Ex. 3+7=7+3
Associative Property of Addition Addends can be regrouped and the sum remains the same. Ex. 1 + (3+5) = (1+3) + 5
Compatible numbers Numbers that are easy to compute with mentally.
rounding A process that determines which multiple of 10, 100, 1,000,etc., a number is closest to.
Associative Property of Multiplication Facotrs can be regouped and the product remains the same. Ex. 2 x (4 x 10) = (2 x 4) x 10
Zero Property of Multiplication The product of any number and 0 is 0.
Commutative Property of Multiplication The order of factors can be changed and the product remains the same. Ex. 3 x 5 = 5 x 3
Identity Property of Multiplication The product of any number and 1 is the number.
Product The number that is the result of multiplying two or more factors.
Factors Numbers that are multiplied to get a product.
Overestimate The result of using larger numbers to estimate a sum or product. The estimate is larger than the actual answer.
Multiple The product of a given whole number and another whole number.
Underestimate The result of using lesser numbers to estimate a sum or product. The estimate is smaller than the actual answer.
Partial Products Products found by breaking one of two factors into ones, tens, hundreds, and so on. and then multiplying each of these by the other factor.
Exponent A number that tells how many times the base is used as a factor.
Base The number that is multiplied by itself when raised to a power.
Squared A name for a number to the second power.
Exponential notation A way to write a number using a base and an exponent.
Cubed A name for a number to the third power.
Divisor The number used to divide another number.
Remainder In division, the number that is left after the division is complete.
Factor pair A pair of number whose product equals a given number.
Dividend The number to be divided
Quotitent The answer to a division problem.
Divisible A number is divisible by another number if there is no remainder after dividing.
Composite number A whole number greater than 1 with more than 2 factors.
Factor tree A diagram that shows the prime factorization of a comostie number.
Prime number A wholde number greater than 1 that has exactly two factors, itself and 1.
Prime factorization The process of writing a whole nubmer as a product of its prime factors.
Algebraic expression a mathematical phrase involving a variable or variables, numbers, and opertions.
Order of operations The order in which operations are done in calculations. Work inside parentheses is done first. Then multiplication and division are inorder from left to right, and finally addition and subtraction are done in order from left to rifht.
Variable A letter, such as n, that represents a number in an expression or an equaiton.
Distriburive Property Multiplying a sum (or difference) by a number is the sma as multiplying each number in the sum (or difference) by that number and adding the products. Ex. 3 x (10 + 4) = ( 3 x 10) + (3 x 4)
Numerator The number above the fraction bar in a fraction.
Mixed number A number that has a whole-number part and a fracitonal part.
Common factor A number that is a factor of two or more given numbers.
Fraction A symbol, such as 2/3, 5/1, or 1/2, used to describe one or more parts of a whole that is divided into equal parts.
Denominator The number below the fraction bar in a fraction.
Improper fraction A fraction whose numberator is greater than or equal to its denominator.
Simplest form A fraciton in which the greatest common factor of the numberator and denominator is 1.
Greatest common factor (GCF) The greatest number that is a foctor of two or more given numbers.
Benchmark fraction Common fracitons used for estimating, such as 1/4, 1/3. 1/2, 2/3, and 3/4.
Least common multiple (LCM) The least number that is a common multiple of two or more numbers.
Common multiple A number that is a multiple of two or more numbers.
Least common denominator (LCD) The least common multiple of the denominators of two or more fractions.
Created by: bteague