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## Arithmetic (all content)

### Course: Arithmetic (all content)>Unit 5

Lesson 1: Fractions intro

# Cutting shapes into equal parts

Lindsay figures out if 4 pieces of pie are each equal to 1/4 of the pie. Created by Lindsay Spears.

## Want to join the conversation?

• before humans discovered gravity were we just floating around...?
• No, gravity still existed before humans discovered it.
• is 1/4 = to 1/8?
• 1/8 is actually half of 1/4. Interesting!

That might sound strange because 8 is 2 times 4. But remember we are talking about fractions. If you imagine a pie that has been divided into 4 equal pieces and a pie of the same size that is divided into 8 equal pieces, each piece of the second pie is going to be half the size of the pieces in the first pie.

Think of it another way with only one pie. If you cut the pie into quarters (1/4) so you have 4 equal pieces of pie, and then cut each of those quarter pieces in half, you would have 8 pieces of the pie - each slice is now one eighth (1/8) of the pie. As you cut the quarter (1/4) in half, the eighth (1/8) is half the size of the quarter.

Did that help?
• From to why didn't she use a pizza as the representation.
• Pizza or pie, they're both circles. So it doesn't matter which of those we use as a circle representation.
• i don't got a question
• no body has a question.
(1 vote)
• What is the line between fractions called?

It's called the vinculum, but it can also be called the fraction bar or division bar.
• Doese any one know how to multiply fractions?
• its easy just multiply the two top numbers to get the numerator and the two bottom numbers to get the denominator. also, if you have to divide fractions you flip around the second fraction and then multiply hope this helps :-)
• how do i achaly start to do the math that i need ti do like pracktes itt
• The next step is a practice session. Also, please consider AJ Jones' suggestion.
• huh what are you talking about
• The bottom row is called the denomerater.