Math Study Guide
Unit 8 – Perimeter & Area
perimeter
the distance around a
figure
area – the number of
metric system – a
square units needed to
cover a surface
measurement system
for length that uses
multiples of ten.
Example:
Example:
2 cm + 3 cm + 3 cm = 8
cm
The perimeter of this
figure is 8 centimeters.
millimeter (tiny)
centimeter (small)
meter (large)
kilometer (huge!)
The area is 9 square
units.
centimeter (cm)
meter (m)
kilometer (km)
A metric unit for
measuring length
A metric unit for
measuring length and
distance
A metric unit for
measuring length and
distance
Examples:
Examples:
100 centimeters = 1
meter
100 centimeters = 1
meter
A centimeter (cm) is
about the width of your
index finger.
1,000 meters = 1
kilometer
If 1,000 meters = 1
kilometer, then:
2 km = _______m
3 km = _______m
7 km = _______m
A meter (m) is about the
distance from one hand
to the other
when you stretch out
your arms.
5,000 m = _______km
2,500 m = _______km
customary or standard
measurement system –
a measurement system
for length that uses
inches, feet, yards, and
miles.
inch (small)
foot (medium)
yard (large)
mile (huge)
inch (in.)
foot (ft)
A customary unit for
measuring length
A customary unit for
measuring length or
distance
Examples:
Examples:
12 inches = 1
foot
An inch (in.) is about the
length of
your thumb from the first
knuckle to the tip.
yard (yd)
mile (mi)
A customary unit for
measuring length or
distance
A customary unit for
measuring length and
distance
Examples:
Examples:
1 yard = 3 feet
5,280 feet = 1 mile
12 inches = 1 foot
A foot (ft) is about the
length of a sheet of
paper.
If one yard = 3 feet,
then:
2 yards = _____feet
3 yards = _____feet
5 yards = _____feet
10 yards = _____feet
and,
12 inches = 1 foot, so:
24 inches = _____feet
36 inches = _____feet
48 inches = _____feet
A yard (yd) is about the
length of a baseball bat.
A mile (mi) is about the
distance you
can walk in 20 minutes.
5 feet = _____inches
2 feet = _____inches
10 feet = _____inches
2.5 feet = _____inches
3.5 feet = _____inches
Practice problems: Use the correct formula to find the areas of
the polygons.
formula for the area of a parallelogram _____________________
formula for the area of a triangle ___________________________
Also, calculate the perimeters of each polygon.
You will need to measure to the nearest centimeter.
Perimeter ___________
Area _______________
Perimeter ___________
Area _______________
Perimeter ___________
Area _______________
Perimeter __________ Area