# Mathematics – Stage 2 – Year A – Unit 2

This unit introduces the big idea that addition and subtraction problems can be solved using a variety of strategies.

Mathematics K–10 Syllabus © 2023 NSW Education Standards Authority (NESA) for and on behalf of the Crown in right of the State of New South Wales.

Students are provided with opportunities to:

• apply place value to partition and regroup numbers for addition and subtraction problem solving
• recognise and explain the connection between addition and subtraction
• select efficient strategies when solving problems.

## Syllabus focus and content group

### Stage 2

##### 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

Whole numbers: Apply place value to partition, regroup and rename numbers up to 6 digits

##### Additive relations A – MAO-WM-01, MA2-AR-01
• Use the principle of equality
• Recognise and explain the connection between addition and subtraction
• Select strategies flexibly to solve addition and subtraction problems of up to 3 digits
##### Additive relations B – MAO-WM-01, MA2-AR-01

Partition, rearrange and regroup numbers to at least 1000 to solve additive problems