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

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