Additive Thinking and Mental Strategies · Operations and Algebra

Mental Math and Compensation

Developing flexible strategies like bridging through ten and using near doubles.

Key Questions

  1. 1How can changing a number to a nearby multiple of ten make mental addition easier?
  2. 2Why do different people use different mental paths to reach the same sum?
  3. 3When is it faster to calculate mentally than to write it down?

NCCA Curriculum Specifications

NCCA: Primary - NumberNCCA: Primary - Operations
Class/Year: 3rd Year
Subject: Mathematical Foundations and Real World Reasoning
Unit: Additive Thinking and Mental Strategies
Period: Operations and Algebra

Suggested Methodologies

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