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3rd Grade Math VA SOL Vocabulary
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Terms in this set (69)
standard form
writing a number using numbers;15,264
word form
writing a number using words
expanded form
writing a number using each number's value; 10,000 + 5,000 + 200 + 60 + 4
even
a whole number that has a 0, 2, 4, 6, or 8 in the ones place
odd
a whole number that has a 1, 3, 5, 7, or 9 in the ones place
place value
the value of a digit based on its position in a number
round
write a number to the nearest ten, hundred, thousand
compare
decide if numbers are equal to, less than, or greater than each other
regroup
use 1 ten to form 10 ones; 1 hundred to form 10 tens, and so on
addition
the opposite operation of subtraction
difference
the answer in a subtraction problem
commutative property of addition
you can add numbers in any order
identity property of addition
the property that states that when you add 0 to a number, the result is that number;
6 + 0 = 6
inverse operations
the operation that is opposite of each other; + and -; x and division
fact family
a set of related addition and subtraction, or multiplication and division, number sentences
multiply
when you combine equal groups, you can multiply to find how many in all
commutative property of multiplication
you can multiply numbers in any order
identity property of multiplication
the property that states that when you multiply a number by 1, the product will be that number; 6 x 1 = 6
factor
the numbers that are multipled to find a product
multiple
the product of a given whole number and another whole number; multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27...
array
an arrangement of objects in rows and columns
product
the answer in multiplication
divide
to separate things into equal groups
quotient
the answer in division
dividend
the number to be divided
divisor
the number by which another number is divided
remainder
the amount left over after dividing
half hour
30 minutes
quarter hour
15 minutes
quarter til
15 minutes until the next hour; 45 minutes has passed
quarter after
15 minutes after the hour
bar graph
a bar that uses bars to show data
pictograph
a graph that uses pictures to show and compare information
line plot
a graph that uses an x or another symbol to represent the data
fraction
part of a whole
equivalent
two or more sets that name the same amount
proper fraction
the numerator is smaller than the denominator showing it is less than 1
numerator
the part of a fraction above the line, which tells how many parts are being counted
denominator
the part of a fraction below the line which tells how many equal parts there are in the whole or in the group
mixed number
a whole number and a fraction
area
the number of square units needed to cover a flat surface
perimeter
the distance AROUND a closed figure
capacity
the amount a container can hold
mass
the amount of matter that on object contains
volume
the capacity or amount of space inside a 3-D shape; length x height x width
Celsius
used to measure temperature in the metric system
Fahrenheit
used to measure temperature in the customary system
plane figure
a 2-dimensional figure (flat); classified by the number of angles, sides, and vertices; circle, triangle, rectangle
quadrilateral
a polygon with 4 sides: square, rectangle, trapezoid, rhombus, kite, parallelogram
similar figures
figures that have the same shape, but not the same size
line of symmetry
a line that separates a figure into two congruent halves that are mirror images of each other
congruent
have the same shape and the same size
solid figure
three-dimensional figure; takes up space; cyclinder, rectangular prism; sphere
vertex
a corner of a solid figure where three or more edges meet; plural form (vertices)
edge
a line segment where two faces of a solid figure meet
face
the flat surface of a solid figure
angle
a figure formed by two rays or line segments that share an endpoint (vertex)
right angle
an angle whose rays meet to form perpendicular lines at a 90 degree angle
acute angle
an angle that is less than a (90) right angle
obtuse angle
an angle that is greater than a right angle (90 degrees) but less than a straight angle (180 degrees)
straight angle
an angle that measures 180 degrees; a straight line
perpendicular lines
lines that intersect at a right angle (90 degrees)
intersecting lines
lines that cross or will cross at one point
parallel lines
lines that will never cross
centimeter
a metric unit used to measure length or distance
probability
the chance that a given event will happen
certain
an event will always happen
equally likely
having the same chance of happening
impossible
an event that will NEVER happen
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