# CCSS Math Standard: 3.MD.2

Solve problems involving measurement and estimation of intervals of time, liquid volumes, and masses of objects. Measure and estimate liquid volumes and masses of objects using standard units of grams (g), kilograms (kg), and liters (l). (Excludes compound units such as cm^3 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, e.g., by using drawings (such as a beaker with a measurement scale) to represent the problem. (Excludes multiplicative comparison problems (problems involving notions of “times as much.”)

• #### Measurement: An Elephant

What if I told you that an elephant weighed a back-breaking 176,000? Could you figure out the unit I'm using? But… how many corgis would that be?

• #### Measurement: A Long Movie

What if I told you a movie was a whopping 0.017 long? Could you figure out the unit I'm using? This lesson packs in strange measurements of time as well as tiny decimals.

• #### Measurement: How Big is this Bathtub?

So, if I told you a bathtub holds 640 of water, which unit would make the most sense?

• #### Measurement: How Old Is Mr. Byrd?

What if I told you that I'm 341,640 old? Could you figure out what unit I'm using? Hint: it's not years!