Operations and Algebraic Patterns · Algebraic Thinking

The Relationship of Addition and Subtraction

Exploring inverse operations and the commutative property of addition.

Key Questions

  1. 1How can knowing 8 plus 7 help you solve 15 minus 8?
  2. 2Why does the order of numbers matter in subtraction but not in addition?
  3. 3What patterns can you find when adding ten to any number?

NCCA Curriculum Specifications

NCCA: Primary - AlgebraNCCA: Primary - Number
Class/Year: 2nd Year
Subject: Foundations of Mathematical Thinking
Unit: Operations and Algebraic Patterns
Period: Algebraic Thinking

Suggested Methodologies

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