Add and Subtract Fractions

1
Add and Subtract Fractions

• You will learn how to add and subtract fractions
  with like or unlike denominators.

2
Add Fractions

• To add fractions with the same denominators, just
  add the ___________ and keep the ____________ the
  same.
• 5 1
• 8 8

Numerator
Denominator
Simplify
Remember to always ____________________ your
answer.
3
Subtract Fractions

• To subtract fractions with the same denominators,
  just subtract the ___________ and keep the
  ____________ the same.
• 5 1
• 8 - 8

Numerator
Denominator
Simplify
Remember to always ____________________ your
answer.
4
Add Fractions

• When two fractions have different denominators
  you can add them by finding a ___________
  denominator.

common
Step 1 Find a common ____________ between the
two denominators. 1/2 1/3 LCM of 2 and 3
is ____
Step 2 Find ______________ fractions using that
denominator. 1 x 3 2 x 3 1 x 2 3 x 2
Step 3 To add the fractions, _______ the
numerators and leave the denominator
_________________. 3 2 5 6 6 6
equivalent
multiple
add
the same
6
simplify
Remember to __________________ your answer, if
possible.
5
Subtract Fractions

• To subtract fractions with the same denominators,
  just subtract the ___________ and keep the
  ____________ the same.
• 5 1
• 8 - 8

Remember to always ____________________ your
answer.
6
Add Fractions

• To add fractions with the same denominators, just
  add the ___________ and keep the ____________ the
  same.
• 5 1
• 8 8

Remember to always ____________________ your
answer.
7
Add Fractions

• When two fractions have different denominators
  you can add them by finding a ___________
  denominator.

Step 1 Find a common ____________ between the
two denominators. 1/2 1/3 LCM of 2 and 3
is ____
Step 2 Find ______________ fractions using that
denominator. 1 x 3 2 x 3 1 x 2 3 x 2
Step 3 To add the fractions, _______ the
numerators and leave the denominator
_________________. 3 2 5 6 6 6
Remember to __________________ your answer, if
possible.