NZ Level 5 Multiplying and Dividing Negative Fractions
Lesson

We have already done a lot of questions and chapters involving Multiplying (Parts of Parts I, Parts of Parts 2) and Dividing (Dividing Parts I and Dividing Parts II). This chapter will give you practice on multiplying and dividing but with negative fractions thrown into the mix.  All the rules you have learnt still apply.

## Multiplying Fractions

1. Change any mixed fractions to improper first
2. Multiply the numerators
3. Multiply the denominators
4. Simplify if possible

## Dividing Fractions

1. Change any mixed fractions to improper first.
2. Change the division into a multiplication of the reciprocal
3. Multiply the numerators
4. Multiply the denominators
5. Simplify if possible

## Rules for Multiplying and Dividing with Negative Numbers #### Worked Examples

##### QUESTION 1

Evaluate $9\times\left(-\frac{4}{5}\right)$9×(45), giving your answer in simplest form.

##### QUESTION 2

Evaluate $\left(-\frac{45}{4}\right)\div\frac{9}{28}$(454)÷​928, giving your answer in simplest form.

##### QUESTION 3

Evaluate $\left(-5\frac{6}{7}\right)\div5\frac{1}{2}$(567)÷​512, writing your answer in its simplest form.

### Outcomes

#### NA5-3

Understand operations on fractions, decimals, percentages, and integers