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Math Vocab Top. 5&6

MATH VOCABULARY: TOPICS 5 & 6

TermDefinition
Dividend The number to be divided; Exam. 54÷9 = 6 or 54/9 – 54 is the dividend.
Divisor The number by which the dividend is being divided by; Exam. 54÷9= 6: 9 is the divisor
Quotient The answer in a division problem; Exam. 54÷9= 6: 6 is the quotient
Remainder The amount that is left after dividing a number into equal parts; the remainder is the numerator in the fraction; the denominator is the divisor.
Product The answer in a multiplication problem.
Decimal A number with one or more places to the right of a decimal point.
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.
Partial Quotients We can use partial quotients to divide by a one-digit divisor. We can choose multiples of the divisor to find partial quotients we subtract the partial quotients from the dividend.
Equivalent Decimals Decimals that name the same amount; Exam: 0.7 = 0.70
Fraction A symbol such as 2/3, 5/1, 8/5, used to describe one or more parts of a whole that is divided into equal parts. A fraction can name a part of a whole, a part of a set, a location on a number line, or a division of whole numbers.
Estimate/estimation To give an approximate value rather than an exact answer.
Rounding A process that determines which multiple of 10, 100, 1,000, and so on, a number is closest to.
Compatible numbers Numbers that are easy to compute mentally.
Reasonable(ness) Does the answer make sense?
Model When the real thing can’t be used, make a model.
Area The number of SQUARE units needed to cover a surface of figure; multiply; units must be written in square inches, square meters, or the number and exponent of 2
Perimeter The distance around a figure; outer edge.
Distributive property Multiplying a sum or difference by a number is the same as multiplying each number in the sum or difference by the number & adding or subtracting the products. Exam: 3 x (10 +4) = (3 x 10) + (3 x 4)
Associative Property of Multiplication Factors can be regrouped & the product remains the same. Exam. 2 x (4 x 10) = (2 x 4) x 10
Associative Property of Addition Addends can be regrouped & the sum remains the same. Exam. 1 + (3 + 5) = (1 + 3) + 5
Identity property of Addition The sum of any number and zero is that number. Exam. 119 + 0 = 119.
Identity Property of Multiplication The product of any number and one is that number. Exam. 119 x 1 = 119
Commutative Property of Addition The order of addends can be changed & the sum remains the same. Exam. 3 + 7 = 7 + 3
Commutative Property of Multiplication The order of factors can be changed & the products remains the same. Exam. 3 x 5 = 5 x 3
Place value The position of a digit in a number that is used to determine the value of the digit.
Multiple The product of a given whole number & any non-zero whole number.
Communicate & Justify Be able to explain the problem and how to solve it.
Array A way of displaying objects in rows & columns.
Hexagon A shape with 6 sides.
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