3rd Grade Math Note Cards
(Created byLynn McCoy,
Modified by Jamyle Acevedo)
Data and GraphingLine Graph
(y axis)
(x axis)
A line graph shows the changes in data over time .
Data and Graphing
Pictograph
Keyà
A pictograph uses sets of pictures to represent information. Use the key to solve the problem.
Data and Graphing
Bar Graph
A bar graph uses horizontal or vertical lines
to show or information.
Data and Graphing
Line Plot
In a line plot, data is placed on a number line using symbols.
Data and Graphing
Stem and Leaf Plot
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".
Data and Graphing
Pie Chart
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.
1 5 2 3
Maximum
Minimum
The smallest number.
1 5 2 3
Minimum
Math Vocabulary
Patterns
· 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!
Lines
Line
A line is a straight path that goes on forever in both directions. It has no endpoints.
Lines
Line Segment
A straight line between two points. The points are called endpoints.
In this example A and B are the endpoints.
Lines
Parallel Lines
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.
Angles
Angles
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
An acute angle measures less than 90 degrees.
Angles
Right Angles
A right angle measures exactly 90 degrees.
Angles
Obtuse Angles
An obtuse angel measures more than 90 degrees but less than 180 degrees.
Triangles
Triangle
A triangle is a polygon with 3 sides, 3 vertices (corners) and 3 angles.
vertice
Quadrilaterals
Quadrilaterals
A quadrilateral is a shape with 4 sides, 4 vertices (corners), and 4 angles.
Quadrilaterals
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
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
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.
Quadrilaterals
Parallellogram
A parallelogram is a quadrilateral that has 2 pairs of parallel sides.
The opposite sides are congruent (equal).
Quadrilaterals
Trapezoid
A trapezoid is a quadrilateral with exactly one pair of parallel lines.
Quadrilaterals
Kite
A kite is a quadrilateral that has 2 pairs of equal sides but does not have any parrallel lines.
Other Polygons
Pentagon
A pentagon has 5 sides, 5 vertices (corners), and 5 angles.
Other Polygons
Hexagon
A hexagon has 6 sides, 6 vertices, and 6 angles.
Other Polygons
Octagon
An octagon has 8 sides, 8 vertices, and 8 angles.
Math Vocabulary
Congruent
Congruent means something that is
the same shape and the same size.
These triangles are congruent.
Math Vocabulary
Similar
Shapes that are similar are the same shape but NOT the same size.
Math Vocabulary
Adjacent
Adjacent means next to.
Angles 1 and 2 are adjacent to each other.
Measurement
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
The main unit is the meter.
10 millimeters = 1 centimeter
1000 millimeters = 100 centimeters = 1 meter
1000 meters = 1 kilometer
Measurement
Customary (US) Measurement- Weight
16 ounes = 1 pound
2,000 pounds = 1 ton
Measurement
Metric Measurement- Weight
The main unit is the gram.
1000 milligrams = 1 gram
100 centigrams = 1 gram
1000 grams = 1 kilogram
Measurement
Customary Measurement- Capacity/Volume
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
This is a 2 Liter bottle of soda.
Operations
Additon
The answer in an additon problem is
called the sum. 1 + 1 =2
Addition words:
altogether
in all
sum
how many
total
Operations
Subtraction
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.
Multiplication Words (together with addition words):
each
per
twice
double
*When you multiply the amounts get BIGGER!
Operations
Division
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
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 = _____
Estimation
Estimate
Use rounding to help you estimate.
Estimation Words:
round
about
almost
nearest
approximately
at least
Estimation
Rounding Steps
1. Underline the place you are rounding. 458 452
2. Look at the number to the right. 45à8 45à2
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
The numerator is the top number. This number answers the question, “How many are shaded?”
Fractions
Denominator
The denominator is the bottom number.
It tells into how many parts the whole has been divided.
Fractions
Improper Fraction
In an improper fraction the numerator is bigger than the denominator.
Fractions
Mixed Numbers
A mixed number has a whole number and a fraction.
2 2/3
Fractions
A Whole
A whole
Fractions
Comparing Fractions
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.
2008-2009
Created by Lynn McCoy, Modified by Jamyle Acevedo
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