Practice questions available in McGraw Hill Math Grade 6 Answer Key PDF Lesson 20.1 Line Segments and Rays will engage students and is a great way of informal assessment.
McGraw-Hill Math Grade 6 Answer Key Lesson 20.1 Changing from Customary Units to Metric Units
Exercises
CALCULATE
Question 1.
3 feet is how many meters?
Answer: 0.9144
Explanation:
We have to convert feet to meters
1 foot = 0.3048 meters
3 feet = 3 × 0.3048 = 0.9144 meters
So, 3 feet = 0.9144 meters
Question 2.
A \(\frac{1}{2}\) gallon is how many liters?
Answer: 2273.05
Explanation:
We have to convert from gallons to liters
1 gallon = 4.54 liter
1/2 gallon = 4.54/2 = 2.27
Therefore \(\frac{1}{2}\) gallon is 2.27 liters
Question 3.
Which is larger, a 16-ounce soda bottle, or a \(\frac{1}{2}\) liter soda bottle?
Answer: \(\frac{1}{2}\) liter soda bottle
Explanation:
In order to compare which soda bottle is larger we have to convert from liter to ounce
We know that
1 liter = 33.814 ounce
1/2 liter = 33.814/2 = 16.907 ounce ≈ 17 ounce
Therefore \(\frac{1}{2}\) liter soda bottle is larger than 16-ounce soda bottle
Question 4.
A 200-pound person weighs how many kilograms?
Answer: 90.71 kilograms
Explanation:
We have to convert the given weight from pounds to kilograms.
1 pound = 0.45 kg
200 pounds = 200 × 0.45 = 90.71 kgs
Thus 200 pound person weighs 90.70 kilograms.
Question 5.
If the highway exit sign says it is 2 miles to the next exit, how many kilometers is that?
Answer:
1 mile = 1.6 kilometer
2 mile = 2 × 1.6 = 3.21 kilometers
Thus 2 miles to the next exit means 3.21 kilometers.
Question 6.
Which race should take longer, the 100-yard or 100-meter dash?
Answer:
1 yard = 0.9 meters
100 yard = 100 × 0.9 = 91.44 meters
100 meter > 91.44 meters
Therefore 100 meters dash is longer than 100 yard.
Question 7.
If a tank has a 105.68 gallon capacity, how many liters is that?
Answer:
1 gallon = 4.54 liter
We have to convert from gallons to liters
105.68 gallon = 105.68 × 4.54 = 480.43 liters
Question 8.
Which is heavier, a 16-ounce steak or a .5-kilogram steak?
Answer:
Convert from ounce to kilogram
1 ounce = 0.02 kilogram
16 ounce = 0.45 kilograms
Thus 0.5-kilogram steak is heavier than a 16-ounce steak.
Question 9.
A 2-ton truck weighs how many kilograms?
Answer:
Convert from ton to kilogram
1 ton = 907.18
2 ton = 2 × 907.18 = 1814.37 kilograms
Thus a 2-ton truck weighs 1814.37 kilograms.
Question 10.
If a man is 6.56 feet tall, how many meters tall is he?
Answer:
We have to convert feet to meters
1 foot = 0.3048 meters
6.56 feet = 6.56 × 0.3 = 1.99 ≈ 2 meters