hour hand
the short hand on an analog clock
minute hand
the long hand on an analog clock
greater than
>
less than
<
equal to
0
polygon
A closed plane figure made up of line segments
quadrilateral
4 sided polygon
pentagon
5 sided polygon
hexagon
6 sided polygon
nonagon
9 sided polygon
heptagon
7 sided polygon
octagon
8 sided polygon
acute angle
an angle less than 90 degrees
obtuse angle
an angle greater than 90 degrees
right angle
90 degrees
fraction
A number that names part of a whole.
mixed number
a number made up of a whole number and a fraction
equivalent fraction
different fractions that are equal in value
penny
1 cent
nickel
5 cents
dime
10 cents
quarter
25 cents
half dollar
50 cents
dollar
100 cents
inch
A customary unit of length.
12 inches = 1 foot.
foot
12 inches
yard
3 feet
centimeter
one hundredth of a meter
meter
m
place value
The value of the place of a digit in a number.
ones place
the value of a digit in the ones position on a place-value chart
tens place
the second digit in a whole number
hundreds place
the third digit in a whole number
thousands place
the fourth digit in a whole number
tenths place
The first place value after a decimal point.
hundredths place
the position of the second digit to the right of the decimal point.
decimal point
A dot (.) separating the whole number from the fraction in decimal notation.
sum
the answer to an addition problem
difference
the answer to a subtraction problem
product
the answer to a multiplication problem
quotient
the answer to a division problem
area
the number of square units needed to cover a surface
perimeter
The distance around a figure