Measurement Benchmarks

Below are some examples of measurement benchmarks used in elementary schools often. These benchmarks can help students estimate measurements.

Examples of estimating with customary units

• The box of cereal weighs about 1 pound

• The length of a book is about 1 foot

• A large fish bowl holds about 1 gallon of water

• A slice of bread weighs about 1 ounce
  

The chart below show benchmarks for customary units of measurement

The chart below show benchmarks for metric units of measurement

Other examples of estimating with metric units

• The length of a bed is about 2 meters
  

• The length of a smart phone is about 12 centimeters
  

• A house front door weighs about 20 kg

• A bathtub can hold about 400 liters of water