6.1

## National STEM Learning Centre

Skip to 0 minutes and 7 secondsPAULA KELLY: Hello, and welcome to the final week of our course, exploring fractions, decimals, percentages.

Skip to 0 minutes and 13 secondsMICHAEL ANDERSON: Last week, we looked at the division with decimals and fractions without the use of a calculator. We introduced a range of methods and explored why they work in order to develop our understanding of the processes involved.

Skip to 0 minutes and 25 secondsPAULA KELLY: This week, we're going to delve deeper into percentages, increasing and decreasing by a percentage, and finishing by looking at simple and compound interest. So you will need a calculator. As usual, this week will contain a mixture of videos, examples, word questions, and questions for you to have a go at yourself. So please remember to post your thoughts, solutions, and questions as we go.

# Delving deeper into percentages

Last week we explored methods to help divide fractions and decimals. This week we delve deeper into percentages. We build upon finding a percentage of an amount to consider how to increase and decrease an amount by a percentage and look at the difference between simple interest and compound interest. For this week, it will be useful to have a calculator to hand.

As usual this week contains a mixture of videos, examples, worked questions and questions for you to have a go at yourself. Please remember to post your thoughts, solutions and questions as we go.

## Recap of last week’s final question

Before we go further with percentages, let’s look at where we left off last week. We asked the following question:

For two numbers, A and B, the following statement is true:

“Five sixths of four fifths of A is equal to two fifths of three quarters of number B.”

What is the value of A/B as a fraction in its simplest form?

We’ll be releasing the answer at the start of the 6th week of this course.