Additive Thinking and Mental Strategies · Number and Algebra

Inverse Operations

Exploring the relationship between addition and subtraction to check accuracy and solve for unknowns.

Key Questions

  1. 1How can we use addition to prove that a subtraction result is correct?
  2. 2In what ways are addition and subtraction 'opposites' of the same action?
  3. 3How does understanding the part-part-whole relationship help solve missing number problems?

ACARA Content Descriptions

AC9M3N03AC9M3A02
Year: Year 3
Subject: Mathematics
Unit: Additive Thinking and Mental Strategies
Period: Number and Algebra

Suggested Methodologies

Ready to teach this topic?

Generate a complete, classroom-ready active learning mission in seconds.

Generate a Custom MissionBrowse Lesson Plan Templates

More in Additive Thinking and Mental Strategies

Flexible Addition Strategies

Using jump, split, and compensation strategies to solve addition problems mentally.

1 methodologies

Browse curriculum by country

AmericasUSCAMXCLCOBR
EuropeUKIEFRDEESITNLPTSE
Asia & PacificINSGAU