# Lesson 14

Using Operations on Decimals to Solve Problems

### Lesson Narrative

In this lesson, students apply their knowledge of operations on decimals to two sporting contexts. They analyze the distance between hurdles in a 110-meter hurdle race. In this situation, students use the given context to determine which arithmetic operations are relevant and use them to solve the problems. Additionally, they draw or use a diagram to help them make sense of the measurements, as well as to communicate their reasoning about the measurements (MP3). The numbers used in the problems reflect measurements that can be accurately measured on site, so the decimals can all be calculated by hand.

### Learning Goals

Teacher Facing

• Apply operations with decimals to solve problems about the dimensions of a sports field or court, and explain (orally, in writing, and using other representations) the solution method.
• Choose whether an exact answer or an estimate is appropriate for a given problem.
• Interpret a verbal description or diagram that represents the dimensions of a sports field or court.

### Student Facing

Let’s solve some problems using decimals.

### Student Facing

• I can use addition, subtraction, multiplication, and division on decimals to solve problems.

Building On