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