Topics
9. Measurement
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United States of AmericaAZ
3rd Grade

9.01 Units of mass

Lesson
Practice
Lesson

Are you ready?

Can you compare how heavy different objects are?

If two objects have very different weights, we can use different units of mass for their measures.

Learn

This video introduces the units of grams, and kilograms and discusses the types of objects that would be measured by these units.

Apply

Which unit is best to measure the mass of this cup of flour?

  1. Grams

    A

    Kilograms

    B

 

Remember!

The prefix can help with identifying the size of the units.

kilo - means "one thousand of", so a kilogram has $1000$1000 grams.

Outcomes

3.MD.A.2

Measure and estimate liquid volumes and masses of objects using metric units. (Excludes compound units such as cm3 and finding the geometric volume of a container.) Add, subtract, multiply, or divide to solve one-step word problems involving masses or volumes that are given in the same units. Excludes multiplicative comparison problems (problems involving notions of “times as much”).

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