Your child is exposed to the terms written below daily. He or she needs to know and use the terms when referring to all math work. A test will be given covering these terms in the near future and will be repeated periodically throughout the year. Please use them with your child at home when you are working together, and quiz your child over the meanings of these terms. This list will grow as new information is introduced in class. Thank you!
1st Nineweeks Terms
addends numbers being added
sum the answer to an addition problem
minuend the largest (first) number in a subtraction problem
subtrahend the number being subtracted in a subtraction problem
difference the answer to a subtraction problem
inverse to do the opposite of
equivalent having the same value
variable a symbol used int a math problem to represent a number
commutative property (addition) Addends can be added in any order.
identity property (addition) when zero is added to any addend the sum is that number
associative property (addition) addends can be grouped differently
ascending in order from least to greatest
descending in order from greatest to least
standard a written expression for a number or numeral
expanded a number written as the sum of its digits multiplied by its place value
word a way to write numbers using words
digits the symbols 1, 2, 3, 4, 5, 6, 7, 8, 9, and 0
New Terms for Second Nine Weeks
array an arrangement of objects or numbers in rows or columns
factors numbers that are multiplied to give a product
product the answer to a multiplication problem
of means to multiply
quotient the answer to a division problem
average the number found by dividing the sum of a set of numbers b the number or addends
commutative property factors can be multiplied in any order
associative property factors can be grouped differently in multiplication
dividend the number to be divided in a division problem
divisor the number that divides the dividend
fact family a set of related addition/subtraction or multiplication/division number sentences
multiplication the process of finding the total number of items in equalsized groups, or finding the total number of items. It is also the opposite of division.
variables symbols or letters that stand for an unknown number
identity property states that the product of any number and 1 is that number
zero property of multiplication the product of any number and zero is zero.
Third Nine Weeks Terms
data information collected about people or things
key the part of a map or graph that explains symbols
scale the numbers on a bar graph that help you read the number each bar shows
classify to group pieces of data according to how they are related
line plot a graph that shows each piece of data on a number line
line graph a graph that uses a line to show how data changes over time
fraction a number that names part of a whole or part of a group
numerator the part of a fraction that is above the line, which tells how many equal parts of the group or whole that is being described by the fraction
denominator the part of the fraction that is below the line, which tells how many equal parts there are in the whole or in the group
length the measure of something from end to end
capacity the amount a container can hold
weight how heavy an object is
ounce (oz.) a customary unit for measuring light items
pound (lb.) a customary unit for measuring heavy items
degree of Farenheit (^{0}F) a customary unit for measuring temperature
mass the amount of matter in an object
gram (g) a metric unit use to measure the mass of light objects
kilogram (kg) a metric unit for measuring the mass of heavy objects
degrees of Celsius (^{o}C) a metric unit for measuring temperature; water freezes a (0^{o}C) and boils at 100^{o}C
