Math 123
Practice Test2 Name:_________Key____________
Make sure you try these on your own first, before peeking at the answers, remember the test
won’t have the answers provided for you! Keep studying.
1) Please convert the following:
a) The height of Mount Everest is 29,035 feet. How many miles is that?
29035 ft 1 mi
x ≈ 5.5miles
1 5280 feet
b) You run a 10 kilometer race. How many miles did you run?
10 km 0.621mi
x =6.21miles
1 1 km
c) You buy a 24 pack of 591mL bottles of water. How many Liters is that?
24 ×591 mL=14184 mL
Using the metric to metric conversions kL hL daL L dL cL mL
This is 3 jumps to the left, which results in 14.184 L
2) How many pints are in 15 gallons?
15 gallons 4 quarts 2 pints
× × =120 pints
1 1 gal 1 qt
3) Earlier this year in a drug bust in Shanghai, China, police seized 2.4 tons of
methamphetamines. If a typical dosage is 50mg, how many doses is that drug bust, which the
Chinese police prevented from being sold to the public?
We need to get to milligrams, which is metric, but have tons, which is English. 2.4 tons must
be converted to pounds first and then kilograms and then to milligrams.
2.4 tons 2000lbs 1 kg
× × ≈ 2182 kg
1 1 ton 2.2lbs
Using the metric to metric conversions kg hg dag g dg cg mg
This is 6 jumps to the right, which yields: 2,182,000,000mg
Now we convert this to doses, knowing that 1 dose = 50mg…
2,182,000,000 mg 1 dose
× =43,640,000 doses
1 50 mg
4) The low temperature today is 20°F. What would this be in Celsius?
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https://www.coursehero.com/file/14945841/Practice-Exam-2-Answer-Key/
, Math 123
5 5 5
C= ( F−32 )= (20−32 )= (−12 ) ≈−6.7℃
9 9 9
This makes sense, since we know that 0°C is freezing, and 20°F is below freezing.
5) A 52 inch wide TV has a screen area of 1,064 in2. How many square feet is that?
52 inch is extraneous information. Because of Square unit, we must either use the conversion
1064 ¿2 1 ft 2
12∈¿∨ x 2
=7.39 ft 2
1 144 ¿
1 ft
twice, or square it to cancel out in2 12∈¿ x
¿
2
1064 ¿ 1 ft
x
1 ¿
6) Water is coming out of a hose at 20 quarts per minute, how many gallons per hour is this?
Remember per minute, means the minute unit is in the bottom, you can also set this up in 2
20 qt 1 gal 60 min
steps and the
order does n' tmatter . x x =300 gal/hr
1 min 4 qt 1 hr
7) You are constructing a rectangular concrete patio that measures 10 feet long, 6 feet wide
and 10 inches deep. What is the volume in ft3? What is the volume in m3? First make 10 in
5
12∈¿= ft∨.83 ft
6
1 ft
into feet. 10∈ ¿ x ¿ Now find the Volume = LWH = 10 ft X 6 ft X 5/6 ft = 50 ft3
1
¿
50 ft 3 1 yd 3 0.914 m 3
1
x ( ) (
3 ft
x
1 yd )
=1.4 m3 is one conversion
8) You order a 1 pound steak in Indianapolis, but pounds are not used in Australia. Please
convert pounds to ounces, then to grams so you can order steak in Australia. 1 ounce = 28
1 pound 16 oz 28 grams
grams
x x =448 grams
1 1 pound 1 oz
9) A certain medication for diabetes has dosage limits of 10mg/kg/day, not to exceed
recommended dosage in a 24hour period. It is to be given 2 times per day. If an adult weighs
220 pounds, what is the maximum dose that he or she should receive, rounded to the nearest
This study source was downloaded by 100000838401522 from CourseHero.com on 04-28-2022 05:18:24 GMT -05:00
https://www.coursehero.com/file/14945841/Practice-Exam-2-Answer-Key/
Practice Test2 Name:_________Key____________
Make sure you try these on your own first, before peeking at the answers, remember the test
won’t have the answers provided for you! Keep studying.
1) Please convert the following:
a) The height of Mount Everest is 29,035 feet. How many miles is that?
29035 ft 1 mi
x ≈ 5.5miles
1 5280 feet
b) You run a 10 kilometer race. How many miles did you run?
10 km 0.621mi
x =6.21miles
1 1 km
c) You buy a 24 pack of 591mL bottles of water. How many Liters is that?
24 ×591 mL=14184 mL
Using the metric to metric conversions kL hL daL L dL cL mL
This is 3 jumps to the left, which results in 14.184 L
2) How many pints are in 15 gallons?
15 gallons 4 quarts 2 pints
× × =120 pints
1 1 gal 1 qt
3) Earlier this year in a drug bust in Shanghai, China, police seized 2.4 tons of
methamphetamines. If a typical dosage is 50mg, how many doses is that drug bust, which the
Chinese police prevented from being sold to the public?
We need to get to milligrams, which is metric, but have tons, which is English. 2.4 tons must
be converted to pounds first and then kilograms and then to milligrams.
2.4 tons 2000lbs 1 kg
× × ≈ 2182 kg
1 1 ton 2.2lbs
Using the metric to metric conversions kg hg dag g dg cg mg
This is 6 jumps to the right, which yields: 2,182,000,000mg
Now we convert this to doses, knowing that 1 dose = 50mg…
2,182,000,000 mg 1 dose
× =43,640,000 doses
1 50 mg
4) The low temperature today is 20°F. What would this be in Celsius?
This study source was downloaded by 100000838401522 from CourseHero.com on 04-28-2022 05:18:24 GMT -05:00
https://www.coursehero.com/file/14945841/Practice-Exam-2-Answer-Key/
, Math 123
5 5 5
C= ( F−32 )= (20−32 )= (−12 ) ≈−6.7℃
9 9 9
This makes sense, since we know that 0°C is freezing, and 20°F is below freezing.
5) A 52 inch wide TV has a screen area of 1,064 in2. How many square feet is that?
52 inch is extraneous information. Because of Square unit, we must either use the conversion
1064 ¿2 1 ft 2
12∈¿∨ x 2
=7.39 ft 2
1 144 ¿
1 ft
twice, or square it to cancel out in2 12∈¿ x
¿
2
1064 ¿ 1 ft
x
1 ¿
6) Water is coming out of a hose at 20 quarts per minute, how many gallons per hour is this?
Remember per minute, means the minute unit is in the bottom, you can also set this up in 2
20 qt 1 gal 60 min
steps and the
order does n' tmatter . x x =300 gal/hr
1 min 4 qt 1 hr
7) You are constructing a rectangular concrete patio that measures 10 feet long, 6 feet wide
and 10 inches deep. What is the volume in ft3? What is the volume in m3? First make 10 in
5
12∈¿= ft∨.83 ft
6
1 ft
into feet. 10∈ ¿ x ¿ Now find the Volume = LWH = 10 ft X 6 ft X 5/6 ft = 50 ft3
1
¿
50 ft 3 1 yd 3 0.914 m 3
1
x ( ) (
3 ft
x
1 yd )
=1.4 m3 is one conversion
8) You order a 1 pound steak in Indianapolis, but pounds are not used in Australia. Please
convert pounds to ounces, then to grams so you can order steak in Australia. 1 ounce = 28
1 pound 16 oz 28 grams
grams
x x =448 grams
1 1 pound 1 oz
9) A certain medication for diabetes has dosage limits of 10mg/kg/day, not to exceed
recommended dosage in a 24hour period. It is to be given 2 times per day. If an adult weighs
220 pounds, what is the maximum dose that he or she should receive, rounded to the nearest
This study source was downloaded by 100000838401522 from CourseHero.com on 04-28-2022 05:18:24 GMT -05:00
https://www.coursehero.com/file/14945841/Practice-Exam-2-Answer-Key/
