Fractions
When you add mixed numbers, you add the
___________ numbers and __________ separately.
Sometimes you get a fraction such as _____. This is
called an _________ fraction.
You can write an _________ fraction as a
____________ number by using division.
1
Steps for Adding & Subtracting Fractions
1) Find a common denominator
2) Rename fractions with the common denominator
3) If necessary, borrow. (for subtraction)
4) Add or Subtract
5) Simplify the answer
2
Solve the following:
7
1) 4 15 + 9 8
3
2) 8 8 -
3
24
3
Solve the following:
3) 4 -
7
28
4) 9 27 +
3
64
4
Warm Up
Add or Subtract.
1)
3 17
- 1
2
5
2)
2
35
- (-5 56 )
5
Fraction Rap!
Adding and Subtracting fractions that you see,
match the bottoms perfectly!
Multiplying fractions no big problem,
top times top over bottom times bottom!
Dividing fractions easy as pie,
flip the second and multiply!
6
Steps for Multiplying Fractions
1) Change all whole and mixed numbers to
improper fractions.
2) Simplify (cross cancel)
3) Multiply
4) Simplify the answer
7
Solve the following:
1) 7
1 27
2) 1 79
2
2
5
8
Solve the following:
3)
7
15
12
21
4)
3 35
1
1 12
9
Steps for Dividing Fractions
1) Change all mixed and whole numbers to
improper fractions
2) Change the 2nd fraction to its reciprocal, change
to multiplication
3) Simplify (cross cancel)
4) Multiply
5) Simplify the answer
10
Solve the following:
1) 2 2
3
3
2) 1 79
2
2
5
11
Solve the following:
3) 2
1
33
4) 4 45
2
23
12