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Notes: 1. Previous Knowledge

This document outlines the Year 6 Mathematics topic focused on selecting and applying efficient strategies for solving problems with whole numbers using mental, written, and digital methods. It emphasizes the importance of prior knowledge in basic arithmetic operations and introduces mental strategies like partitioning for addition. The goal is to enhance students' problem-solving skills and estimation abilities.

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31 views2 pages

Notes: 1. Previous Knowledge

This document outlines the Year 6 Mathematics topic focused on selecting and applying efficient strategies for solving problems with whole numbers using mental, written, and digital methods. It emphasizes the importance of prior knowledge in basic arithmetic operations and introduces mental strategies like partitioning for addition. The goal is to enhance students' problem-solving skills and estimation abilities.

Uploaded by

harpal_abh
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Notes

Year: 6, Victoria, Subject: Mathematics, Topic: Select and apply efficient mental and
written strategies and appropriate digital technologies to solve problems involving all four
operations with whole numbers and make estimates for these computations (VCMNA209)

Name: ___________ Date: ___________

1. Previous Knowledge
To understand this topic, you should already know:

 How to add, subtract, multiply, and divide small whole numbers (e.g., numbers less than
100).
 The place value of digits in numbers up to thousands (e.g., in 345, "3" is hundreds, "4" is
tens, "5" is ones).
 Basic mental math strategies like:
o Counting on or back (e.g., to add 7 to 15, count up: 16, 17, ..., 22).
o Making tens (e.g., 8 + 7 = 8 + 2 + 5 = 10 + 5 = 15).
o Using doubles (e.g., 6 + 6 = 12).
 How to use a calculator for basic operations (addition, subtraction, multiplication,
division).
 Basic ideas about fractions and decimals, though this topic focuses on whole numbers.

These skills will help you learn the more advanced strategies in this topic.

2. Topic Explanation: Efficient Strategies for Operations


with Whole Numbers
This topic teaches you how to add, subtract, multiply, and divide whole numbers using mental
strategies (in your head) and written strategies (on paper). You’ll also learn to estimate
answers and use digital technologies like calculators to check your work.

Addition

 Mental Strategies:
o Partitioning: Break numbers into tens and ones.
Example: 23 + 45
 23 = 20 + 3
 45 = 40 + 5
 Tens: 20 + 40 = 60
 Ones: 3 + 5 = 8
 Total: 60 + 8 = 68

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