Download 3rd Grade Math Vocabulary Note Cards

3rd Grade Math Note Cards
(Created byLynn McCoy,
Modified by Jamyle Acevedo)
Data and Graphing
Line Graph
4
(y axis)
(x axis)
A line graph shows the changes in data over time .
Data and Graphing
Pictograph
4
Key
A pictograph uses sets of pictures to represent
information. Use the key to solve the problem.
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
Page 1 of 17
Data and Graphing
Bar Graph
4
A bar graph uses horizontal or vertical lines
to show or information.
Data and Graphing
Line Plot
4
In a line plot, data is placed on a number line using symbols.
Data and Graphing
Stem and Leaf Plot
4
In a stem-and-leaf plot each data value is split into a "stem" and a
"leaf". The "leaf" is usually the last digit of the number and the
other digits to the left of the "leaf" form the "stem".
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
Page 2 of 17
Data and Graphing
Pie Chart
4
A pie chart is a circle divided into triangles. The triangles
represent a part or percentage (%) of the whole.
Math Vocabulary
Maximum
The largest number.
1523
1
Maximum
Minimum
The smallest number.
1523
Minimum
Math Vocabulary
Patterns


5
Look for relationships between the numbers or
symbols.
Are the numbers getting larger? [ + or x ]
Are the numbers getting smaller? [- or ]
Input Output
19
23
14
18
8
12
Rule: +4
When you think you have found the correct pattern,
always check and be sure it works!
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
Page 3 of 17
Lines
Line
3
A line is a straight path that goes on forever in both directions. It
has no endpoints.
Lines
Line Segment
3
A straight line between two points. The points are
called endpoints.
In this example A and B are the endpoints.
Lines
Parallel Lines
3
Parallel lines never meet or cross. They stay the same
distance apart.
Main Street
Elm Street
The map shows that Main and Elm Street are
parallel to each other.
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
Page 4 of 17
Angles
Angles
3
Angles are formed by 2 rays or line segments
and share the same endpoint. The endpoint they
share is called a vertex.
vertex
Angles
Acute Angles
3
An acute angle measures less than 90 degrees.
Angles
Right Angles
3
A right angle measures exactly 90 degrees.
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
Page 5 of 17
Angles
3
Obtuse Angles
An obtuse angel measures more than 90 degrees but
less than 180 degrees.
Triangles
3
Triangle
A triangle is a polygon with 3 sides, 3 vertices
(corners) and 3 angles.
vertice
Quadrilaterals
Quadrilaterals
3
A quadrilateral is a shape with 4 sides, 4
vertices (corners), and 4 angles.
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
Page 6 of 17
Quadrilaterals
3
Square
A square is a quadrilateral. All the square’s sides
are the same length.
It has all right angles and 2 pairs of parallel lines.
Quadrilaterals
3
Rectangle
A rectangle is a quadrilateral.
The opposite sides of the rectangle are the
same length. It has all right angles and 2 sets of
parallel lines.
Quadrilaterals
3
Rhombus
A rhombus is a quadrilateral whose sides are all
the same length. It shaped like a diamond. The
opposite angles are equal and it has 2 sets of
parrallel lines.
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
Page 7 of 17
Quadrilaterals
3
Parallellogram
A parallelogram is a quadrilateral that has 2 pairs of
parallel sides.
The opposite sides are congruent (equal).
Quadrilaterals
3
Trapezoid
A trapezoid is a quadrilateral with exactly one
pair of parallel lines.
Quadrilaterals
3
Kite
A kite is a quadrilateral that has 2 pairs of
equal sides but does not have any parrallel
lines.
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
Page 8 of 17
Other Polygons
Pentagon
3
A pentagon has 5 sides, 5 vertices (corners), and
5 angles.
Other Polygons
3
Hexagon
A hexagon has 6 sides, 6 vertices, and 6 angles.
Other Polygons
Octagon
3
An octagon has 8 sides, 8 vertices, and 8 angles.
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
Page 9 of 17
Math Vocabulary
3
Congruent
Congruent means something that is
the same shape and the same size.
These triangles are congruent.
Math Vocabulary
3
Similar
Shapes that are similar are the same shape but
NOT the same size.
Math Vocabulary
Adjacent
Adjacent means next to.
3
Angles 1 and 2 are adjacent to each other.
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
Page 10 of 17
Measurement
2
Customary (US) Measurement - Length
The main unit is the inch.
12 inches = 1 foot
36 inches = 1 yard
3 feet = 1 yard
5,280 feet = 1 mile
From least (shortest) to greatest (longest)
inch – foot – yard – mile
Measurement
Metric Measurement - Length
2
The main unit is the meter.
10 millimeters = 1 centimeter
1000 millimeters = 100 centimeters = 1 meter
1000 meters = 1 kilometer
Measurement
2
Customary (US) Measurement- Weight
16 ounes = 1 pound
2,000 pounds = 1 ton
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
Page 11 of 17
Measurement
Metric Measurement- Weight
The main unit is the gram.
1000 milligrams = 1 gram
100 centigrams = 1 gram
1000 grams = 1 kilogram
2
Measurement
Customary MeasurementCapacity/Volume
2
From least to greatest
cup – pint – quart - gallon
Measurement
Metric Measurement- Capacity/Volume
The main unit is the liter.
1000 millileters = 1 liter
100 centiliters = 1 liter
1000 gams – 1 kilogram
2
This is a 2 Liter bottle of soda.
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
Page 12 of 17
Operations
Additon
The answer in an additon problem is
called the sum. 1 + 1 =2
1
Addition words:
altogether
in all
sum
how many
total
Operations
Subtraction
1
The answer to a subtraction problem
is called the difference. 1-1=0
Subtraction Words:
How many more than?
decrease
reduce
less than
are left
Operations
Multiplication
The answer is called the product. 1 x 1 = 1
Multiply when you are given a set of something with the
same amount in each set.
1
Multiplication Words (together with addition words):
each
per
twice
double
*When you multiply the amounts get BIGGER!
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
Page 13 of 17
Operations
Division
1
The answer to division problems is called the quotient.
Divide when you are given a total
and the problem asks you to separate or divide into equal parts.
Division Words:
per
each
When you divide the amounts get smaller!
Operations
Order of Operations
Please Excuse My Dear Aunt Sally
1
P - Parenthesis
( )
E – Exponents
M – Multiplication (from left to right)
D – Division
A – Addition
(from left to right)
S – Subtraction
4 x 4 – 3 = ____
(1 + 1) x 2 – 4 = _____
Estimate
Estimation
1
Use rounding to help you estimate.
Estimation Words:
round
about
almost
nearest
approximately
at least
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
Page 14 of 17
Rounding Steps
Estimation
1
1. Underline the place you are rounding. 458
452
2. Look at the number to the right. 458 452
3. If the number to the right is 0, 1, 2, 3, or 4 the number you
are rounding will stay the same. (452)
4. If the number to the right is 5, 6, 7, 8, or 9 ,
it will go up (459)
Fractions
Numerator
1
The numerator is the top number. This number
answers the question, “How many are shaded?”
Fractions
Denominator
1
The denominator is the bottom number.
It tells into how many parts the whole has been
divided.
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
Page 15 of 17
Fractions
Improper Fraction
1
In an improper fraction the numerator is
bigger than the denominator.
Fractions
Mixed Numbers
1
A mixed number has a whole number and a
fraction.
2 2/3
Fractions
A Whole
1
A whole
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
Page 16 of 17
Fractions
Comparing Fractions
1
If the numerators are the same,
the LARGER the number smaller the fraction.
Fractions
Comparing Fractions
If the denominators are the same,
put the numberators in order.
1
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
Page 17 of 17