Place Value and the Power of Three Digits · Number Sense

Number Lines and Estimation

Developing a mental map of where numbers sit in relation to multiples of 10 and 100.

Key Questions

  1. 1How does identifying the midpoint between two multiples of 100 help us round numbers?
  2. 2When is an estimate more useful than an exact count in real life?
  3. 3How can we determine the scale of a number line if only the start and end points are labeled?

National Curriculum Attainment Targets

KS2: Mathematics - Number and Place Value
Year: Year 3
Subject: Mathematics
Unit: Place Value and the Power of Three Digits
Period: Number Sense

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