**Investigate and calculate percentage discounts of 10%, 25% and 50% on sale items, with and without digital technologies (ACMNA132)**

**LO: To calculate percentage discounts of 10%, 25% and 50%.
**

**Know:**

- What a percentage is.

**Understand:**

- That percentages discounts means saving money.

**Do:**

- I can calculate percentage discounts of 10%, 25% and 50%.

**Essential Questions:**

- What is a percentage?
- Why is a percentage always out of 100?

*Calculating Discounts*

### 100% of an item means paying full price.

50% means paying half of the full price.

25% means paying a quarter (half then half again) of the full price.

10% means paying a tenth (divide by 10) of the full price.

*Step-by-Step Process*

*Step-by-Step Process*

### 1) Find the percent discount and change it into a decimal value or a fraction. eg.) 20% means 0.2 or 20/100

### 2) Since the full price is 100% of the price, you want to find a certain amount of the full amount so you multiply the full amount by the decimal or fraction value in step 1.

### 3) The answer given will the be discounted amount.

### 4) To figure out the final price you have to subtract the discounted amount from the original amount.

**Worked Example**

**Worked Example**

### To calculate discount, we have to first figure out how much money do we save with the discount.

### The first step is to find out what 25% of $14.99 is, so what we do is $14.99 x 25/100 (25 out of 100 is the same as 25%).

### We figured out that $3.75 is 25% of $14.99, which means we save $3.75.

### When leaving the store I would have to pay $14.99 – $3.75 = $11.24

**ACARA Work Sample**

**ACARA Work Sample**

**Percentage Discount Videos**

**Percentage Discount Videos**