Place Value and Multi-Digit Arithmetic · Number Sense

The Logic of Rounding

Using place value to round whole numbers to the nearest 10 or 100.

Key Questions

  1. 1How does the midpoint on a number line help us decide which way to round?
  2. 2In what real life situations is an estimate more useful than an exact number?
  3. 3How does rounding change the precision of our mathematical communication?

Common Core State Standards

CCSS.Math.Content.3.NBT.A.1
Grade: 3rd Grade
Subject: Mathematics
Unit: Place Value and Multi-Digit Arithmetic
Period: Number Sense

Suggested Methodologies

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