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Level Three > Number and Algebra

# Strategic Solving Part I

Achievement Objectives:

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.

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.

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

## Wall Display - level 2

This activity is for students to use when working independently of the teacher in class and as homework to practice number properties.

## Strategic Solving Part IV

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

## Strategic Solving Part III

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

## Homework sheet: stage 6 – 7, Revision of add-sub and mult-div 2

These exercises and activities are for students to use as a week’s homework to practice number properties

## Homework sheet: stage 6 – 7 Revision of add-sub and mult-div domains

These exercises and activities are for students to use as a week’s homework to practice number properties