This activity is about finding percentages of numbers, quantities, and measurements.

It is easy to find 10% of any number because **10% = 10/100 = 1/10**

Simply **divide by 10:**

So 10% of 192 is 19.2

10% of 54 g is 5.4 g etc.

When you know 10%, it is easy to find 1% - simply divide by 10 again!

To find 2%, we can find 1% and multiply by 2.

To find 5%, we can find 10% and divide by 2.

To find 30%, we can find 10% and multiply by 3.

We can then add any combinations together!

__Example__

Find **43% of 212 m**

10% of 212 m is 21.2 m

**40%** of 212 m is 21.2 × 4 = **84.8 m**

1% of 212 m is 21.2 ÷ 10 = 2.12 m

**3%** of 212 m is 2.12 × 3 = **6.36 m**

43% of 212 m = 40% + 3% = 84.8 + 6.36 = __91.16 m__

You can work out percentages on a calculator either by using the % key, or by multiplying the number by the required percentage and dividing by 100.

For this activity, we will be using the method above, so **calculators allowed only **for complicated divisions or multiplications!

Let's get started on the questions.