# Stage 3, mathematics, Year B – Unit 26

This unit develops the big idea that our number system extends infinitely to very large and very small numbers.

Students are provided with opportunities to:

• read, partition, rename, represent and order numbers up to and including billions
• compare, order and represent decimals
• apply place value knowledge and known strategies when solving addition and subtraction problems for whole numbers and decimals.

### Syllabus outcomes and content groups

Represents numbers A – MAO-WM-01, MA3-RN-01, MA3-RN-02

• Whole numbers: Recognise, represent and order numbers in the millions
• Whole numbers: Apply place value to partition, regroup and rename numbers to 1 billion
• Decimals and percentages: Compare, order and represent decimals

Additive relations A – MAO-WM-01, MA3-AR-01

• Apply efficient mental and written strategies to solve addition and subtraction problems
• Use estimation and place value understanding to determine the reasonableness of solutions

Additive relations B – MAO-WM-01, MA3-AR-01

• Choose and use efficient strategies to solve addition and subtraction problems
• Applies known strategies to add and subtract decimals

## Syllabus

Outcomes and content descriptors from Mathematics K–10 Syllabus (2022) © NSW Education Standards Authority (NESA) for and on behalf of the Crown in right of the State of New South Wales, 2024.

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