AC9M2N02

Number > Place Value

Australian Curriculum Version 9 Says:

Partition, rearrange, regroup and rename two- and three-digit numbers using standard and non-standard groupings; recognise the role of a zero digit in place value notation.

What this means

Flexible use of place value with two and three-digit numbers.

You can partition (break numbers into parts) in:

  • Standard partitioning e.g. 392 as
    3 hundreds + 9 tens + 2 ones
    (300 + 90 + 2)
  • Place value e.g. 39 tens and 2 ones or 380 and 12.
    Non-standard e.g. 280 + 100 + 2
  • Renaming covers ‘trading’, ‘regrouping’, etc. For example, 248 can be interpreted as 2 hundreds 4 tens 8 ones, or 24 tens 8 ones, or 248 ones.

Tip

Zero’s role in place value is much easier for students to grasp when materials are used.

Click on image to Enlarge descriptor card.

Resources & Manipulatives

These Quick Curriculum Guides have been designed to take a look at the Australian Mathematics Curriculum (AC9), explain terminology and provide interpretations.

Narelle and I have used our professional judgement to put forward what is appropriate for students at this year level.

Authors: Dr Paul Swan & Narelle Rice
We would like to also thank Linda Marshall and David Dunstan for comments and assistance.

These documents serve as general advice only and do not take into account your specific needs and conditions. While best care has been taken in compiling these materials, mistakes may exist.
Australian Curriculum version 9 materials used under Creative Commons licence from ACARA. Readers should always refer back to the curriculum itself and the state-based curriculum that is relevant for you.

This document is copyright of A-Z Type (Dr Paul Swan). A copy of this document may be downloaded from www.drpaulswan.com.au.