Lesson 4: Divide decimal dividends by two-digit divisors, estimating quotients, reasoning about the placement of the decimal point, and making connections to a written method.

Grade 5 students in Eureka Math Chapter 13 learn to divide decimal dividends by two-digit divisors, practicing how to estimate quotients and reason about decimal point placement using the standard algorithm. Through problems like dividing 77 kilometers equally among 22 runners or splitting 14.7 mL of serum into 21 containers, students connect estimation strategies to a written division method. This lesson builds fluency with multi-digit decimal division while reinforcing unit conversions and real-world problem solving.