Post on 15-Dec-2015
A number divisible by 2.
Numbers ending in 0, 2, 4, 6, or 8.
even number
A number NOT divisible by 2.
Numbers ending in 1, 3, 5, 7, 9.
odd number
When three or more numbers are multiplied, the product is the same regardless of the
grouping of the factors.
(2 x 3) x 4 = 24
2 x (3 x 4) = 24(2 x 4) x 3 = 24
associative property of multiplication
also called the Grouping Property
The numbers added together to form a sum.
7 + 8 = 15
addend
sum
The numbers that are multiplied in a multiplication problem.
3 x 5 = 15
factors
product
sumthe answer to an addition problem
differencethe answer to a subtraction problem
productthe answer to a multiplication
problem
quotientthe answer to a division problem
The property that states that changing the order of the factors
does not affect the product.
Example:
3 x 5 = 15 and 5 x 3 = 15
commutative property
of multiplication
A straight path that extends in both directions without end; marked with an arrowhead at
each end.
line
A piece of a line that has two endpoints.
line segment
Two (or more) lines that run the same distance apart at every point
and will never intersect.
parallel lines
A line with one end point that extends non-stop in the
opposite direction.
ray
A shape formed by two rays that share an endpoint.
angle
The point where:• two or more rays share an endpoint.• the edges of a solid figure meet.
The point at the top of a cone.
vertexplural: vertices
Two or more lines that meet or cross at a point.
intersecting lines
Two lines that intersect and form right angles.
perpendicular lines
protractorTool used to
measure angles.
90°
90°90°
360°
90°
90°
90°
90°
180°
270°
90°
· A full circle rotation is equal to 360° (degrees)
·When divided into four equal sections, each section is worth 90°
1 rotation = 90°
2 rotations =
180°
3 rotations = 270°
4 rotations = 360°
An angle measuring 90 degrees.
right angle
An angle that measures LESS than 90 degrees.
acute angle
An angle that measuresMORE than 90 degrees.
obtuse angle
straight angleAn angle that measures
180 degrees.
four criteria for a
polygon
A polygon
is made up of all straight line segments
is closed (has no breaks in the line
segments)
is 2-dimensitional
has no lines that cross over each other
A polygon with all equal sides and all equal angles.
regular polygon
A polygon that does NOT have all equal sides and
equal angles.
irregular polygon
four criteria of a
rectangle
A rectangle:
is a quadrilateral. is made up of four line segments. has four 90° angles. is a parallelogram – a four sided
polygon with two pairs of parallel sides.
A quadrilateral (four sided polygon) with two pairs of
parallel sides.
parallelogram
A quadrilateral (four sided polygon) with one pair of parallel sides.
trapezoid
• Figures that have the same size AND same shape.
• The figures do not have be in the same position. •If you placed the two shapes directly on top of each other they would match up perfectly.
congruent
Figures that have the same shape, but are not the same size.
similar
The line that divides a figure in half so that both halves are exactly
the same.
line of symmetry
A triangle with all three sides of equal length.
equilateral triangle
3 in.
3 in.3 in.
A triangle with two sides that are equal and one that is not.
isosceles triangle
3 in.
5 in. 5 in.
A triangle with all sides that are a different length.
scalene triangle
8 in.
9 in.
4 in.
A triangle with at least one right angle.
right triangle
triangleA polygon with 3 sides.
quadrilateralA polygon with 4 sides.
quadrilateralA polygon with 4 sides.
parallelogramstrapezoidsrhombus
A quadrilateral with two pairs of parallel sides and four equal sides.
rhombus
pentagonA polygon with 5 sides.
A polygon with 6 sides.
hexagon
A polygon with 8 sides.
octagon
A polygon with 10 sides.decagon
obtuse triangleA triangle having an obtuse angle. One of the angles of the triangle measures more than 90 degrees.
acute triangleA triangle having three acute angles.
Which months have 30 days?
AprilJune
SeptemberNovember
Which months have 31 days?
JanuaryMarchMayJuly
AugustOctober
December
The number of square unitsthat can fit inside of a shape.
To find the _______ , count
the square units.
area
area = 9 square units
perimeterThe distance around the outside
of a shape.
To find the __________ , add the length of all the sides.
2 cm + 3 cm + 3 cm = 8 cm
The perimeter of this figure is 8 centimeters.
bar graph
A flat surface of a solid shape.face
The line where two surfaces of a 3-dimensional shape
meet.
edge
A corner where two or more straight lines meet on a 3-dimenstional shape.
vertexvertices (plural)
vertex
The number below the bar in a fraction.
It tells the total number of equal parts or groups into which the
whole or group has been divided.
denominator
The number above the bar in a fraction.
It tells how many of the equal parts of the whole or group are being
considered.
numerator
The volume of this figure is 24 cubic units.
The amount of space a solid figure takes up.
Volume = Length x Width x HeightV = L x W x H
volume
square pyramid
A 3-dimensional solid with a base that is a square and four faces that are triangles.
The metric unit for
measuring temperature.
Celsius
Fahrenheit
Customary or standard unit for measuring temperature.
standard form
2,394
A way to write numbers by using the digits 0-9.
expanded form
241 = 200 + 40 + 1
word form
A way to write numbers by using words.
two-hundred fifty-seven
Used on a pictograph to tell how many each picture stands for.
key
line plot
line graphA graph that uses a line to show how
something changes over time.
mixed numberNumber represented by a
whole number and a fraction.
3 58
fraction greater than one
A fraction in which the numerator is larger than
the denominator.
53
A solid figure with six faces that are rectangles.
rectangular prism
1,000 grams = 1 kilogram
gram and kilogramA metric unit for measuring mass.
The prefix kilo- is equal to
1,000kilometer = 1,000 meterskilogram = 1,000 grams
centi-The prefix is equal to
100century = 100 years
100 centimeters = 1 meter
liter and milliliter
Metric units for measuring capacity.
1,000 milliliters = 1 liter
The prefix milli-
is equal to
1,000
10 centimeters = 1 decimeter
A decimeter (dm) is about the width of an adult's hand.
decimeter
A metric unit for measuring length.
ante meridiem
a.m.The time of day starting at midnight
and ending at noon.
In Latin, ante meridiem means “before the midday.”
post meridiemp.m.
The time of day starting at noon and ending at midnight.
In Latin, post meridiem means
“after midday.”
analog clock
digital clock
colon
:The symbol used to separate the hour
from the minutes on a digital clock.
A model of multiplication that arranges objects in
rows and columns.
array
The amount a container can hold.
capacity
Customar
y
cups
pints
quarts
gallons
The amount a container can hold.
capacity
Metric
milliliters
liters
kiloliters
Freezing Point of Water
32 degrees Fahrenheit
0 degrees Celsius
Boiling Point of Water 212 degrees Fahrenheit
100 degrees Celsius
Normal Body Temperature
98.6 degrees Fahrenheit
37 degrees Celsius
temperature
, , ●hundred millions
ten millions
millions
hundred thousands
ten thousands
thousands
hundreds
tens
ones
tenths
hundredths
thousandths
decimals
Place Value Chart
Example: 634,822
•Standard Form: 634,822
•Word Form: six hundred thirty-four thousand, eight hundred twenty-two
•Expanded Form: 600,000 + 30,000 + 4,000 + 800 + 20 + 2 = 634,822
•What is the value of the underlined digit in the number 634,822 = 600,000
•What place value does the underlined digit hold? = hundred thousands
Distributive Property of Multiplication
The property that states that multiplying a sum by a number is the same as multiplying each addend by
the number and then adding the products.
break down the 8 into 5 + 3
7 x 8
5 + 3
(7 x 5) + (7 x 3)
35 + 21 = 56
break down the 16 into 10 + 6
5 x 16
10 + 6
(5 x 10) + (5 x 6)
50 + 30 = 80
Identity Property of Multiplication
The property that states that the product
of any number and 1 is that number.
Examples:
5 × 1 = 5
248 x 1 = 248
1 × 8 = 8
cubeA three-dimensional shape
with six congruent square faces.
A three-dimensional, pointed shape that has a flat, round base.
cone
cylinder3-dimensional object shaped like a can
dataAnother word for information.
Information collected about people or things and can be represented in graph form.
diagonal
A line segment that connects two vertices of a polygon that are not next to each other.
Opposite operations. Operations that undo and check one another.
addition and subtraction are inverse operations
multiplication and division are inverse operations.
inverse operations