Students are required to be fluent adding, subtracting, multiplying and dividing fractions. This resource list supports the teaching and learning of the use of the four operations, including efficient written methods, applied to simple fractions; proper, improper and mixed numbers.

You are watching: To get rid of a fraction multiply by the reciprocal

Visit the secondary mathematics webpage to access all lists.


Fractions

Category:Mathematics

Thisresource contains packs of games, investigations, worksheets and practical activities ideal for use as starter activities.Fractions packs one and two contain activities designed to explore the concept of fractions.Fractions pack three contains an activity 'Adding Fractions' whichrequires studentsto befamiliar with finding strings of equivalent fractions. The activity 'Unit fraction patterns' is an activity requiring students to find patterns when adding unit fractions.


*

Fractions: Adding and Subtracting

Category:Mathematics

This resource contains two videos. The videos can be paused to allow students to attempt the calculation and then compare their method with the one shown on the video. Students could be asked to make their own video showing alternate methods or giving alternate explanations as to how to complete the calculation.

Adding and subtracting fractions with the same denominator – This video begins by showing the common mistake of adding the numerator and adding the denominator and explaining why this cannot be correct. The correct method is used with a pictorial representation to aid understanding. The video continues with a series of simple addition and subtraction examples.Adding and subtracting fractions with different denominators – This demonstration begins again by explaining that only the numerators are added. There follows a brief recap of equivalent fractions before moving on to show a simple example of how to add fractions with different denominators.


*

Fractions

Category:Mathematics

This resource is designed to improve confidence in mathematics and was developed particularly for primary teachers and those non-specialists who teach mathematics in the lower secondary years. The resource contains a good commentary on how to teach fractions along with a number of examples and exercises suitable for use in the classroom.

Fractions part A covers addition and subtraction of fractions including some very useful worded questions, ideal for testing whether students can determine what is the correct calculation to use to solve the problem.

The next section considers how to teach the principles involved in performing multiplication and division of fractions.


*

Arithmetic: Fractions

Category:Mathematics

Arithmetic: Fractions contains a variety of questions, including worded questions requiring students toadd fractions, subtract fractions,multiply fractions anddivide fractions. Examples using mixed numbers are included.

There aretwo useful activities. Human Multiplicationis apractical activity investigating the multiplication of fractions.

Adding and Subtracting Fractionsisa puzzlerequiring students toadd and subtract fractions.


*

Dividing whole numbers by fractions

Category:Mathematics

This resource uses diagrams to illustrate division by a fraction and, to clarify the common misconception identified with this task, prompts students to rethink the statement, divide three by one quarter, as the number of quarters that fit into three.Practice of dividing by fractions is provided by some follow-up exercises.


*

Fractions

Category:Mathematics

This resource contains three excel files dealing with various aspects of fractions:

Fractions of X (mental arithmetic) - to find fractions of amounts

Fractions: Add, Subtract, Multiply, Divide -apply the four rules to fractions and mixed numbers

Fractions: Mixed, Top-heavy, Equivalent- convert between mixed numbers and improper fractions. and find sets of equivalent fractions


Fraction Code

Category:Mathematics

Each letter of the alphabet is represented by a fraction; students add, subtract, multiply and divide fractions to reveal coded messages.


Cross Bear!

Category:Mathematics

In this resource daddy bear, mummy bear and baby bear share some porridge. Several different problems can be given to students, each solution involves adding fractions with different denominators and the use reciprocals.


Magic Fractions

Category:Mathematics

In this activity students are asked to generate six fractions by using three integers that sum to zero (e.g. -8, 3 and 5). They are then asked to sum these fractions as well as finding their product, with surprising results.

See more: How Many Thousandths Are In One Hundredth S Are In A Thousandths?

Proving the result algebraically involves addition and multiplication of fractions, simplification, and equating variables.