Stage 2, mathematics, Year B – Unit 22

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

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:

  • apply place value understanding to solve addition and subtraction problems
  • identify the connection between addition and subtraction
  • select and explain efficient flexible strategies when solving problems.

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

Whole numbers: Read, represent and order numbers to thousands

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
  • Whole numbers: Recognise and represent numbers that are 10, 100 or 1000 times as large

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, MA2-AR-02

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


Category:

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

Business Unit:

  • Curriculum and Reform
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