The Power of Number Systems · Number and Operations

Mental Strategies for Complex Operations

Developing flexible mental models for multiplication and division of multi digit numbers.

Key Questions

  1. 1When is an estimate more useful than an exact calculation in a professional context?
  2. 2How can we decompose large numbers to make mental multiplication simpler?
  3. 3Why does the distributive property work for both addition and subtraction?

NCCA Curriculum Specifications

NCCA: Primary - Operations
Class/Year: 6th Year
Subject: Mastering Mathematical Reasoning: Year 6
Unit: The Power of Number Systems
Period: Number and Operations

Suggested Methodologies

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Place Value and the Infinite Scale

Exploring the relationship between digits in numbers up to millions and down to three decimal places.

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Factors, Multiples, and Primes

Identifying number properties and using prime factorization to solve complex division problems.

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