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Level Three > Number and Algebra

Strategic Solving Part I

Keywords:
Achievement Objectives:

Achievement Objective: Record and interpret additive and simple multiplicative strategies, using words, diagrams, and symbols, with an understanding of equality.
Achievement Objective: Use a range of additive and simple multiplicative strategies with whole numbers, fractions, decimals, and percentages.

Purpose: 

These exercises and activities are for students to use independently of the teacher to practise number properties.

Specific Learning Outcomes: 

write family of facts based on a given equation

choose a strategy to solve addition and subtraction problems

Description of mathematics: 

Addition and Subtraction, AA (Stage 6)

Required Resource Materials: 
Practice exercises with answers (PDF or Word)
Activity: 

Prior knowledge

Use a range of number strategies for solving addition and subtraction problems with whole numbers.
Write families of facts for addition.
Have an understanding of = sign.

Background

By rearranging equations it may be easier to find a solution to the equation. Students need a clear understanding of equality to rearrnge equations correctly.  This activity gives students the opportunity to revise mental strategies.

Comments on the Exercises

Exercise 1:
Asks students to revise the different ways a number fact with three numbers can be recorded to find a form that enables x to be easily calculated.

Exercise 2:
Asks students to rearrange an equation containing x , and then explain the strategy to calcualte x.

Homework Exercises

Exercise 3. This could be used as homework. It asks students to solve word problems.

Related Resources: 

These exercises and activities follow from the AA teaching episodes from Book 5 and are for those students who are able to use the number properties of addition and subtraction.

AttachmentSize
StrategicSolvingPart1.pdf33.66 KB
StrategicSolvingPart1.doc294.5 KB

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