Download word form A number written in words. one thousand, two hundred

word form
A number written in words.
one thousand, two hundred
fifty-eight
expanded form
A number written as the sum of
the value of its digits.
1,000 + 200 + 50 + 8
standard form
A way to write a number using
only digits.
1,258
addition
Adding or combining numbers or
objects together.
+
addition
4
+
3
addends
=
7
sum
subtraction
Taking one number away from
another number.
bar graph
A graph drawn using rectangular bars
to show how large each value is.
pictograph
A graph that uses
pictures to show
how many.
tally chart
A chart on which
data is recorded.
Data
A collection of
numbers.
operations
Addition,
subtraction,
multiplication, and
division.
Difference
The answer to a subtraction
problem.
4
-
2
=
2
scale
A set of marks, usually
lines and numbers on a
graph that are used for
measuring an amount.
rounding
Reducing or increasing the digits
in a number while trying to keep
its value similar.
37
40
83
80
reasonableness
How close an
estimate is
believed to be to
the actual answer.
number line
A line with numbers placed in
order from least to greatest.
equation
An equation says 2 things are the
same (equal) using math symbols.
7
+
5
=
12
commutative property
A law in math that says you can swap
the numbers around and still get the
same answer when you add or multiply.
7+5=5+7
3x2=2x3
odd number
A whole number that has 1, 3, 5,
7, or 9 in the ones place; A
number that is not divisible by 2.
even number
A whole number that has 0, 2, 4,
6, or 8 in the ones place; A
number that is a multiple of 2.
estimation
To give the approximate number
or answer.
Rounding
About
Approximately
column
The space in
between 2
vertical lines.
row
The space in
between 2
horizontal lines.
multiples
The product of a number and any
other whole number.
12 is a multiple of 4 because
3 x 4 = 12
array
Items arranged
in equal rows and
columns.
multiplication
An operation that gives the total
number when you join equal
groups .
3 x 4 = 12
factors
The numbers you multiply
together to get the product.
3
x
4
=
12
product
The answer to a multiplication
problem.
3
x
4
=
12
division
An operation that
tells you how many
equal groups there are
or how many are in
12 ÷ 3 = 4
each group.
quotient
The answer to a division problem.
12
÷
3
=
4
halves
Divided into 2 equal
parts.
fourths
Divided into 4 equal parts.
decomposing fractions
Splitting a
fraction into
multiple fractions
using arithmetic.
fraction
Part of a whole or part of a set.
1
=
=
8
numerator
1
8
The number above the
fraction bar that tells how
many equal parts are
described.
denominator
1
8
The number below the
fraction bar that tells the
total number of equal parts.
area
The number of
square units
needed to cover a
region.
perimeter
The distance
around a 2demensional
shape.
attribute
A characteristic to
describe an object
(color, size, shape).
intersecting lines
Lines that cross at one point.
parallel lines
Lines that never intersect.
polygon
A closed figure
made up of straight
line segments.
obtuse angle
An angle that
measures more than
a right angle (90°)
acute angle
An angle that
measures less than
a right angle (90°).
right angle
An angle that forms
a square corner
(90°).
quadrilateral
A polygon with 4 sides.
trapezoid
A quadrilateral with only one pair
of parallel sides.
parallelogram
A quadrilateral in
which opposite sides
are parallel.
rhombus
A quadrilateral with all sides the
same length.
rectangle
A quadrilateral with 4 right
angles.
square
A quadrilateral with 4
right angles and all
sides the same length.
solid figure
A figure that has
length, width, and
height (3D).
faces
A flat surface of a
solid that does not
roll.
edges
A line segment where
2 faces of a solid
meet.
vertex (vertices)
The point where 2
rays meet to form an
angle.
rectangular prism
A solid figure with 6 faces, 8
vertices, and 12 edges.
cube
A solid figure with 6
square faces, 8
vertices, and 12 edges.
pyramid
A solid figure
with 5 faces, 5
vertices, and 8
edges.
cone
A solid figure with 0
faces, 1 vertex, and 0
edges.
sphere
A solid figure in the
shape of a ball with
0 faces, 0 vertices,
and 0 edges.
cylinder
A solid figure with 2
congruent circles as
bases.
congruent
Figures that have
the same shape
and size.
similar
Figures that are the same shape,
but different sizes.
A.M.
The time between midnight
and noon.
P.M.
The time
between noon and
midnight.
hot zone
When the minute
hand is on or
between the 9
and 12.
capacity
The volume of a
container
measured in liquid
units.
volume
The number of
cubic units
needed to fill a
solid figure.
twice
Two times a number.
2 x __