# 7. Rounding to estimate using addition (A)

teaches Common Core State Standards CCSS.Math.Content.4.NBT.A.3 http://corestandards.org/Math/Content/4/NBT/A/3
teaches Common Core State Standards CCSS.Math.Practice.MP8 http://corestandards.org/Math/Practice/MP8

## You have saved this lesson!

Here's where you can access your saved items.

Dismiss

Card of

Lesson objective: Apply rounding to approximate a total.

This lesson provides an opportunity for students to apply their knowledge and understanding of rounding to a real-life situation. Students are asked to round three numbers and add the results to get a total approximation of visitors at an amusement park.

Key Concept students will use:

• Rounding to approximate multiple values

Skills students will use:

• Rounding numbers to the thousands

Students engage in Mathematical Practice 8 (look for and express regularity in repeated reasoning) as they use the structure of the base-ten system to generalize their strategies to round a six digit number to different places.

Key vocabulary:

• approximate
• exact
• round

Special materials needed:

• paper
• pencil
Related content