Term A · Chapter 3 · Lesson 5
Estimating Sums and Differences — Part 2
Estimate a difference with rounded numbers and check its size.
MATH-3A-C03-L0535–45 minutes · flexible
Today's challenge
Estimate 5,454 − 1,202 by rounding BOTH numbers to the nearest 100. Try your own method, then compare it with a model.
What you'll learn
- Estimate a difference with rounded numbers and check its size.
- Explain the connection between a diagram and a number sentence.
- Solve a fresh application without step-by-step hints.
Before this lesson
No student records are transmitted or stored on a server.