i love khan i learned so much more new stuff than at real school

good now kept up the good work and I can see your score is 99

Main content

4th grade

Course: 4th grade > Unit 8

Lesson 1: Decomposing fractions

Add and subtract fractions: FAQ

Google Classroom

Frequently asked questions about adding and subtracting fractions.

What does it mean to decompose a fraction?

When we decompose a fraction, we break it down into smaller parts. This can help us understand the fraction better or make it easier to work with.

Try it yourself with these exercises:

What are mixed numbers and improper fractions?

A mixed number is a combination of a whole number and a fraction. For example,

2 \frac{1}{2}

. An improper fraction is a fraction where the numerator is larger than the denominator. For example,

\frac{5}{2}

Try it yourself with this exercise:

Write mixed numbers and improper fractions

How do we add and subtract fractions with common denominators?

When we add fractions with common denominators, we keep the denominator the same and add the numerators together. For example,

\frac{1}{4} + \frac{2}{4} = \frac{3}{4}

When we subtract fractions with common denominators, we keep the denominator the same and subtract the numerators. For example,

\frac{3}{4} - \frac{2}{4} = \frac{1}{4}

Try it yourself with these exercises:

What are equivalent fractions?

Equivalent fractions are two or more fractions that have the same value. For example,

\frac{1}{2}

\frac{2}{4}

, and

\frac{4}{8}

are all equivalent fractions.

Try it yourself with these exercises:

What is a line plot?

A line plot is a graph that shows how many times each data point occurs. It's a good way to organize and analyze data.

Try it yourself with these exercises:

Want to join the conversation?

Sort by:

chasyarabadan09
Posted a year ago. Direct link to chasyarabadan09's post “i like realy dont underst...”
i like realy dont understad ☹ but im gona keep redoing it ontill i understand :[
Button navigates to signup pageComment on chasyarabadan09's post “i like realy dont underst...”
(55 votes)
Answer
- burnett.grace
  Posted 10 months ago. Direct link to burnett.grace's post “Great!”
  Great!
  Comment on burnett.grace's post “Great!”
  (15 votes)
FORTNITE PRO CRANKS 90s
Posted 8 months ago. Direct link to FORTNITE PRO CRANKS 90s's post “upvote for free v bucks”
upvote for free v bucks
Button navigates to signup pageComment on FORTNITE PRO CRANKS 90s's post “upvote for free v bucks”
(20 votes)
Answer
- manuel goat at soccer
  Posted 7 months ago. Direct link to manuel goat at soccer's post “free vbuxs”
  free vbuxs
  Comment on manuel goat at soccer's post “free vbuxs”
  (5 votes)
wangha
Posted 7 months ago. Direct link to wangha's post “Is Khan the best place to...”
Is Khan the best place to learn about math?
Button navigates to signup pageComment on wangha's post “Is Khan the best place to...”
(19 votes)
Answer
- Hayden ^-^
  Posted 7 months ago. Direct link to Hayden ^-^'s post “you now it”
  you now it
  Button navigates to signup page
  (5 votes)
NinjaKiller
Posted a year ago. Direct link to NinjaKiller's post “it is not complicated, yo...”
it is not complicated, you just don't know how to do it
Button navigates to signup pageComment on NinjaKiller's post “it is not complicated, yo...”
(18 votes)
Answer
- 31regbaeza
  Posted 9 months ago. Direct link to 31regbaeza's post “yes its easy if you try a...”
  yes its easy if you try again
  Comment on 31regbaeza's post “yes its easy if you try a...”
  (6 votes)
Elizabeth Swiftcaster
Posted a year ago. Direct link to Elizabeth Swiftcaster's post “this is soo hard pls help...”
this is soo hard pls help:(
Button navigates to signup pageComment on Elizabeth Swiftcaster's post “this is soo hard pls help...”
(18 votes)
Answer
- KeonM
  Posted 9 months ago. Direct link to KeonM's post “i can help you goku style”
  i can help you goku style
  Button navigates to signup page
  (5 votes)
AydenP
Posted a year ago. Direct link to AydenP's post “i like khan academy but i...”
i like khan academy but it be hard
Button navigates to signup pageComment on AydenP's post “i like khan academy but i...”
(10 votes)
Answer
SylasT
Posted 8 months ago. Direct link to SylasT's post “pls not so many qeshtons”
pls not so many qeshtons
Button navigates to signup pageButton navigates to signup page
(9 votes)
Answer
alessandra.baltodano
Posted 10 months ago. Direct link to alessandra.baltodano's post “i love khan i learned so ...”
i love khan i learned so much more new stuff than at real school
Button navigates to signup pageComment on alessandra.baltodano's post “i love khan i learned so ...”
(7 votes)
Answer
- Khan Academy
  Posted 10 months ago. Direct link to Khan Academy's post “good now kept up the good...”
  good now kept up the good work and I can see your score is 99
  Comment on Khan Academy's post “good now kept up the good...”
  (2 votes)
bd1400
Posted 10 months ago. Direct link to bd1400's post “back in my day we didn't ...”
back in my day we didn't do this me don't like so i'm normal right.......right?...
Button navigates to signup pageComment on bd1400's post “back in my day we didn't ...”
(6 votes)
Answer
Grim
Posted 7 months ago. Direct link to Grim's post “thanks”
thanks
Button navigates to signup pageButton navigates to signup page
(5 votes)
Answer