The Power of Place Value · Number and Algebra

Estimating on Number Lines

Using benchmark numbers to locate and estimate the position of values on scaled and unscaled lines.

Key Questions

  1. 1How do benchmark numbers help us determine the relative size of a value?
  2. 2When is an estimate more useful than an exact count in real life?
  3. 3How does the scale of a number line change our perception of the distance between numbers?

ACARA Content Descriptions

AC9M3N01
Year: Year 3
Subject: Mathematics
Unit: The Power of Place Value
Period: Number and Algebra

Suggested Methodologies

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