# Stage 2, mathematics, Year B – Unit 21

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

## Syllabus

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.

Students are provided with opportunities to:

• partition, rename, represent and order numbers up to 6-digits
• apply place value to recognise, name and order decimals to tenths
• use multiplicative structures such as arrays to solve problems.

### Syllabus focus and content groups

Representing numbers using place value A – MAO-WM-01, MA2-RN-01

• Whole numbers: Read, represent and order numbers to thousands
• Whole numbers: Apply place value to partition and regroup numbers up to 4 digits

Representing numbers using place value B – MAO-WM-01, MA2-RN-01, MA2-RN-02

• Whole numbers: Order numbers in the thousands
• Whole numbers: Apply place value to partition, regroup and rename numbers up to 6 digits
• Whole numbers: Recognise and represent numbers that are 10, 100 or 1000 times as large
• Decimals: Extend the application of the place value system from whole numbers to tenths and hundredths

Multiplicative relations A – MAO-WM-01, MA2-MR-01

• Generate and describe patterns
• Use arrays to establish multiplication facts from multiples of 2 and 4, 5 and 10
• Recall multiplication facts of 2 and 4, 5 and 10 and related division facts

Multiplicative relations B – MAO-WM-01, MA2-MR-01

• Investigate number sequences involving related multiples
• Use known number facts and strategies
• Operate with multiples of 10

## Resource

Category:

• Mathematics (2022)
• Multiplicative relations
• Represents numbers using place value
• Stage 2
• Unit