Fractions

Ontario 09 Academic (MPM1D)

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.

- Change any mixed fractions to improper first
- Multiply the numerators
- Multiply the denominators
- Simplify if possible

- Change any mixed fractions to improper first.
- Change the division into a multiplication of the reciprocal
- Multiply the numerators
- Multiply the denominators
- Simplify if possible

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

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

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

Simplify numerical expressions involving integers and rational numbers, with and without the use of technology