Common Core State Standard: 3.MD.2 

Grade  3 
Subject  MATH 
Domain  Measurement & Data 
Theme  Solve problems involving measurement and estimation of intervals of time, liquid volumes, and masses of objects 
Standard  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 onestep 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 
Reference URL  http://www.corestandards.org/Math/Content/3/MD 