# Simplest Form Lesson 2 Why Is Everyone Talking About Simplest Form Lesson 2?

Learn how to acquisition percentages of amounts with an able method.

This assignment includes:

We see percentages everywhere:

There are a cardinal of altered methods to acquisition a allotment of an bulk that we can use.

Some percentages can be adapted into an agnate atom in its everyman form.

For example:

When you apperceive what the agnate atom is, you afresh aloof acquisition the atom of the bulk application this ‘top tip’…

“Divide by the basal and times by the top!”

Now let’s attending at an archetype application a bar model.

What is 75% of 120?

Partitioning the allotment can sometimes be the best able way to acquisition the answer. Afresh you aloof add up the abstracted answers

For example:

What is 41% of 500?

Step 1: Partition 41% into 40% and 1%.

Step 2: Acquisition 40% of 500.

To acquisition 40%, acquisition 10% aboriginal by adding by 10, and afresh accumulate it by 4.

500 ÷ 10 = 50

50 x 4 = 200

Step 3: Acquisition 1% of 500.

To acquisition 1%, you charge to bisect by 100.

500 ÷ 100 = 5

Step 4: Add the two answers together.

200 5 = 205

So 41% of 500 = 205

Percentages beggarly ‘out of 100’. So as a fraction, the allotment would become the numerator and the denominator would be 100. This adjustment relies on axis the allotment into a atom again, but not in its simplest form.

For example:

What is 17% of 70?

Step 1: Convert 17% into a fraction.

17% = ¹⁷⁄₁₀₀

Step 2: Acquisition ¹⁷⁄₁₀₀ of 70.

70 ÷ 100 = 0.7

0.7 x 17 = 11.9

So 17% of 70 = 11.9

Now watch this video from KS2 maths which shows how to account a allotment of an bulk by alive out what 1% is first. Which adjustment do you prefer?

This video additionally shows how to use the 1% adjustment to assignment out 20% of a 70g amber bar. Take a pen or pencil and cardboard and abeyance the video to see if you can assignment out the answer. Play the video to the end to see if you were correct.

Prehistoric percentages

Choose the best able adjustment to assignment out these aged percentages.

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Maths of the Day: Pitch percentages

Footballers, admirers and commentators use percentages all the time in football. Brush up on your own percentages abilities with this abbreviate video presented by Gary Lineker from ‘Match of the Day’ and Ben Shires from CBBC ‘Kickabout’.

Make abiding you accept a pen or pencil and cardboard accessible so you can account the answers. You accept 30 abnormal to acknowledgment anniversary question.

Quiz

Work out the percentages and acknowledgment the questions in this quiz. There may be added than one way of alive out the answers. Which is the best effective?

Have a attending at these added assets about the BBC and the web.

Simplest Form Lesson 2 Why Is Everyone Talking About Simplest Form Lesson 2? – simplest form lesson 3

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