Measurement And Geometry Worksheets With Answer Key - Holt Mcdougal Mathematics
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8Name ________________________________________ Date __________________ Class__________________
Measurement and Geometry
SECTION
8A
SECTION A Family Letter: Area
Dear Family,
The student will learn how to convert between units within the
Vocabulary
customary and metric measuring systems. The table below
These are the math
shows the conversions for the customary system.
words we are learning:
12 inches (in.) 1 foot (ft); 3 ft 1 yard (yd);
area the number of
Length
5,280 ft 1 mile (mi)
square units needed to
cover a given surface
16 ounces (oz) 1 pound (lb);
Weight
customary system a
2,000 lb 1 ton (T)
system of measurement
8 fluid ounces (fl oz) 1 cup (c); 2 c 1 pint (pt);
primarily used in the
Capacity
2 pt 1 quart (qt); 4 qt 1 gallon (gal)
United States
metric system a
Convert 114 inches to feet.
system of measurement
used all over the world
Set up a conversion factor.
whose units are related
1 ft
1 ft 12 in., so multiply by 1 ft
by the decimal system
114 in.
12 in.
12 in.
114 in. 9.5 ft
Cancel the common unit, in.
The conversions for the metric system are below.
Length
10 millimeters (mm) 1 centimeter (cm);
100 cm 1 meter (m); 1,000 m 1 kilometer (km)
Mass
1,000 milligrams (mg) 1 gram (g);
1,000 g 1 kilogram (kg)
Capacity 1,000 milliliters (mL) 1 liter (L);
1,000 (L) 1 kiloliter (kL)
You can use the same methods of multiplying and dividing to
convert in the metric system. However, since metric
measurements are based on powers of ten, there is a
conversion shortcut. To convert to smaller units, move the
decimal point to the right based on the number of zeros in the
conversion factor. To convert to larger units,
move the decimal point to the left.
kg to g
cm to m
1000 g in 1 kg
3 zeros
100 cm in 1 m
2 zeros
Move decimal point 3 places
Move decimal point 2 places
right:
left:
4.850 kg 4,850 g
576 cm 5.76 m
8-1
Holt McDougal Mathematics
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