Worksheet: Estimating Length: Customary Units

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.


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

  • A 3 5 0 0 0 ft
  • B 3 5 0 0 0 m
  • C 3 5 0 0 0 yd
  • D 3 5 0 0 0 km
  • E 3 5 0 0 0 miles


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

  • Afeet
  • Bcentimeters
  • Cinches
  • Dyards
  • Emiles


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


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?

  • A to the nearest mile
  • B to the nearest foot
  • C to the nearest yard


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

  • AShe used the wrong units.
  • BShe missed multiplying by 1 0 0 0 .
  • CShe missed off a zero.
  • DShe missed dividing by 1 0 0 0 .
  • EShe missed adding 1 0 0 0 .


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?

  • A to the nearest sixteenth of an inch
  • B to the nearest eighth of an inch
  • C to the nearest quarter of an inch


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

  • Ainches
  • Byards
  • Cmiles
  • Dcentimeters
  • Efeet


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 large.
  • BThe number would be smaller and easier to visualize.

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

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


William wants to estimate the height of an office building with 58 floors.

Which of the following is the best estimate for the height of a ceiling in an office?

  • A 8 ft
  • B 15 ft
  • C 20 ft
  • D 4 ft
  • E 6 ft

Given there is a gap of about 2 ft between each floor in the building, estimate the total height of the building.

  • A 1 2 7 6 ft
  • B 348 ft
  • C 464 ft
  • D 986 ft
  • E 580 ft

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