Units of Measurement

What is a unit of measurement?

• A special tool used to measure objects

• A standard quantity used to measure or describe things

• A type of ruler used for length measurements

• A device used to weigh items

Answer explanation

A unit of measurement is like a standard quantity used to measure and talk about things in the same way. It helps you understand and communicate the size, weight, or amount of something. For example, when you say something is "5 feet tall" or "3 kilograms heavy," you use units of measurement to give accurate information. Units of measurement make it easier for everyone to understand and use the same way of measuring things.

Tags

CCSS.2.MD.A.3

Which system of measurement is commonly used in the United States for everyday purposes?

• US Customary System

• Empiric System

• Metric System (SI)

• Imperial Metric System

Answer explanation

The US Customary System is commonly used in the United States for everyday purposes, such as measuring length, weight, and volume. However, the Metric System is also used in specific industries and for scientific purposes in the US.

Tags

CCSS.2.MD.A.2

What unit of measurement is most suitable for measuring the length of a pencil?

• Meters

• Yards

• Kilometers

• Inches

Answer explanation

The most appropriate unit of measurement for measuring the length of a small object like a pencil is inches. Inches are commonly used for smaller lengths, such as the size of notebooks and books.

Tags

CCSS.4.MD.A.1

Which unit of measurement is commonly used to weigh a letter?

• Pounds

• Milliliters

• Grams

• Kilograms

Answer explanation

A letter is typically weighed in grams. Grams are used for lightweight objects, making them suitable for measuring the weight of small items like letters and envelopes.

Tags

CCSS.3.MD.A.2

What is the most suitable unit of measurement to express the capacity of a fuel tank in a car?

• Pounds 

• Liters

• Ounces 

• Kilograms 

Answer explanation

The capacity of a fuel tank in a car is best expressed in liters in the Metric System. Liters are widely used for measuring larger volumes of liquid, making it the appropriate unit to quantify the amount of fuel a car's tank can hold.

Tags

CCSS.4.MD.A.1