# Stage 1, mathematics, Year B – Unit 24

Smaller numbers can be found hiding in bigger numbers – develops students' knowledge, understanding and skills of place value and how smaller numbers can be found hiding in bigger numbers.

In this unit students will learn to:

• visualise, estimate, and investigate the structure of groups of 10
• sort, create, recognise, and represent numbers and collections up to 100 in different ways
• ask questions, represent ideas, and record thinking using objects and drawings.

### Syllabus focus and content groups

Representing whole numbers A – MAO-WM-01, MA1-RWN-01, MA1-RWN-02

• Use counting sequences of ones with two-digit numbers and beyond
• Represent numbers on a line
• Represent the structure of groups of ten in whole numbers
• Use counting sequences of ones and tens flexibly
• Form, regroup, and rename three-digit numbers

Combining and separating quantities A – MAO-WM-01, MA1-CSQ-01

• Recognise and recall number bonds up to ten
• Use flexible strategies to solve addition and subtraction problems
• Represent equality

Combining and separating quantities B – MAO-WM-01, MA1-CSQ-01

• Form multiples of ten when adding and subtracting two-digit numbers
• Use knowledge of equality to solve related problems

## 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.

Category:

• Combining and separating quantities
• Mathematics (2022)
• Representing whole numbers
• Stage 1
• Unit