Module 4

area models	A model of multiplication that shows each place value product
commutative property	The sum/product stays the same when the order of the addends is changed. a + b = b + a, or a x b = b x a. (Ex: 3 + 5 = 5 + 3 or 5 x 3 = 3 x 5)
conversion factor	A numerical factor used to multiply or divide a quantity when converting from one system of units to another. (Ex the conversion factor is 3 for converting yards to feet. 2yds x 3 = 6 feet)
decimal divisor	a divisor with a decimal
decimal fraction	A fractional number with a denominator of a power of 10, usually written with a decimal point. (Ex. 0.1; 0.01; 0.001; etc.)
denominator	The number or expression written below the line in a fraction. (Ex. In the fraction 4/5, the denominator is 5)
distribute	give, share, deal out
equation	A statement that two mathematical expressions are equal. (Ex. 9 x 3 = 20 + 7)
equivalent fraction	Fractions that have the same value. (Ex. 1/2 = 2/4 = 4/8…)
expression	A variable or combination of variables, numbers, and symbols that represents a mathematical relationship. (Ex. x + 3)
factors	An integer that divides evenly into another number. (Ex. 2 x 6 = 12, 2 and 6 are factors)
fraction greater than or equal to 1	a combination of whole numbers and fractions OR a numerator greater than or equal to the denominator (improper fraction) (ex. 1 3/4, 4/3)
fractional unit	dividing a unit into equal parts
hundredth	In the decimal numeration system, hundredths is the name of the next place to the right of tenths (Ex In the number 4.38, 8 is in the hundredths place)
line plot	A diagram showing frequency of data on a number line.
mixed number	A number with an integer and a fraction part. (Ex. 3 1/2)
number lines
numerator	The number or expression written above the line in a fraction. (Ex. In the fraction 4/5, the numerator is 4)
parentheses ( )	Used to group symbols and operations in math. When simplifying an expression, the operations within the parentheses are performed first.
quotient	The result of the division of one quantity by another. (Ex. 20/5 =4. 4 is the quotient)
simplify	To express a fraction in simplest form. (Ex. 8/10 in simplest form is 4/5)
tape diagram	A strategy and visual model used to help solve problems.
tenth	In the decimal numeration, tenths is the name of the place to the right of the decimal point. (Ex. In the number 4.3, 3 is in the tenths place)
unit	A quantity chosen as a standard in terms in which other quantities may be expressed. (Ex. If 3 units = 270 cups, then 1 unit = 90 cups)
unit fraction	A fraction with a numerator of 1.
unknown	the missing part
whole unit	the whole/total quantity in a given problem (Ex. Top of a tape diagram)

	Baker High School 29 East Oneida Street Baldwinsville, New York 13027 (315) 638-6000		Durgee Junior High School 29 East Oneida Street Baldwinsville, New York 13027 (315) 638-6086
	Ray Middle School 7650 Van Buren Road Baldwinsville, NY 13027 (315) 638-6106		Elden Elementary 29 East Oneida Street Baldwinsville, NY 13027 (315) 638-6118
	McNamara Elementary 7344 O'Brien Road Baldwinsville, NY 13027 (315) 638-6130		Palmer Elementary 7864 Hicks Road Baldwinsville, NY 13027 (315)638-6127
	Reynolds Elementary 222 Deerwood Drive Baldwinsville, NY 13027 (315) 638-6124		Van Buren Elementary 20 Ford Street Baldwinsville, NY 13027 (315) 638-6121

Baldwinsville Central District Office	315-638-6043
Athletics	315-638-6053
Business Office	315-638-6055
Communications/Publications	315-638-6180
Curriculum and Instruction	315-638-6044
Facilities	315-638-6100
Food Service	315-638-6063
Human Resources/ Title IX Officer	315-638-6047
Registration	315-638-6044
Special Education	315-635-4500
Superintendent	315-638-6043
Technology	315-638-6103
Transportation	315-638-6097