# Lesson Worksheet: Estimating Length: Customary Units Mathematics • 4th Grade

In this worksheet, we will practice how to estimate the lengths of different real-life objects by choosing the most logical unit of length and value in customary units.

Q1:

Which of the following heights could be the cruising altitude for an airliner?

• A35,000 miles
• B35,000 ft
• C35,000 m
• D35,000 yd
• E35,000 km

Q2:

Choose an appropriate unit for measuring the width of the Atlantic Ocean.

• AYards
• BFeet
• CCentimeters
• DMiles
• EInches

Q3:

Which is a more reasonable estimate for the length of a bedroom: 1 rod or 4 rods?

Q4:

Matthew wants to know the approximate height of a mountain. Would it be more accurate to have an approximation given to the nearest mile, yard, or foot?

• Ato the nearest yard
• Bto the nearest foot
• Cto the nearest mile

Q5:

Natalie, using a clinometer, worked out the height of an oak tree to be 63 miles. What did she do wrong?

• BShe missed off a zero.
• CShe missed dividing by 1,000.
• DShe missed multiplying by 1,000.
• EShe used the wrong units.

Q6:

Daniel wants to measure the height of a door frame as accurately as possible. Should he measure its height to the nearest quarter, eighth, or sixteenth of an inch?

• Ato the nearest eighth of an inch
• Bto the nearest quarter of an inch
• Cto the nearest sixteenth of an inch

Q7:

Choose an appropriate unit for measuring the distance between two cities.

• AMiles
• BYards
• CFeet
• DCentimeters
• EInches

Q8:

Daniel wants to estimate the length of a journey from the east coast to the west coast of the USA.

What would be a disadvantage to estimating this distance in feet?

• AThe number would be very small and difficult to visualize.
• BThe number would be very large.

What would be an advantage to estimating the distance in miles?

• AThe number would be larger and easier to visualize.
• BThe number would very small and difficult to visualize.

Q9:

If you are estimating the height of a person, which units of measure would be most appropriate to use?

• Ayards and feet
• Bfeet and inches
• Cmiles and yards

Q10:

Which of the following can be the height of a tree?

• A2 yards
• B20 feet
• C15 inches