# McGraw Hill Math Grade 6 Lesson 20.1 Answer Key Changing from Customary Units to Metric Units

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?

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?

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?

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?
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?
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?
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?
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?