These teaching slides complement Stage 3 Year A of the NSW Mathematics Sample Units of Work, Unit 6, released in 2026. Unit Description: In this unit, students apply an understanding of place value to recognise, read, order, partition, regroup and rename numbers up to one billion. Students recognise that the place value system can be extended to thousandths and they will compare, order and represent decimals up to 3 decimal places. Students will choose, use and apply efficient mental and writ