The document outlines the concepts of fractions, including the definitions of numerator and denominator, and explains how to add and subtract both similar and dissimilar fractions. It provides step-by-step instructions for performing these operations and includes examples to illustrate the process. Additionally, it discusses adding mixed numbers by finding a common denominator and adding whole numbers.

1. REVIEW TIME:

2. • How many equal parts of a whole

3. • The top number says how many slices
we have.
• The bottom number says how many equal
slices the whole pizza was cut into.

4. Numerator / Denominator
• We call the top number the Numerator, it
is the number of parts we have.
• We call the bottom number
the Denominator, it is the number of
parts the whole is divided into.
Numerator
Denominator

5. Equivalent Fractions
Some fractions may look different, but are really the
same, for example:

6. There are three types of
fraction:

21. 2 4
8 8
+ = N

26. Add up the fractions then simplify
the answer if needed.

28. 5 1
6 6
- = N

33. Subtract the fractions then simplify the
answer if needed.
6 3
9 9
1) -
30 22
50 50
2) -
95 45
100 100
3) -
6 4
12 12
4) -
19 4
25 25
5) -

34. Remember this!
Adding Similar Fractions
To add fractions there are Three Simple
Steps:
•Step 1: Make sure the bottom numbers
(the denominators) are the same
•Step 2: Add the top numbers
(the numerators), put that answer over
the denominator
•Step 3: Simplify the fraction (if possible)

35. There are 3 simple steps to subtract
fractions
•Step 1. Make sure the bottom numbers (the
denominators) are the same
•Step 2. Subtract the top numbers (the
numerators). Put the answer over the same
denominator.
•Step 3. Simplify the fraction (if needed).
Subtracting Similar Fractions

36. Adding and Subtracting
Dissimilar Fractions

40. 4 3
5 4
+

42. 3 2
6 7
+

44. 5 3
10 5
+

46. Add up the fractions then simplify the answer
if needed.

49. 8 5
12 12
-

51. 4 3
7 8
-

53. Subtract the fractions then simplify the
answer if needed.

54. Addition of mixed numbers
with like denominators

55. If James has 2 pizzas and Jane has
2 pizzas, how many pizza’s do they have
together?
1
8
5
8

56. Step 1: Add the fractions.
Step 2: Add the whole numbers.

57. Add the following fractions.

63. If James has 2 pizzas and Jane has
2 pizzas, how many pizza’s do they have
together?
1
8
3
4

64. Step 1: Find a common denominator.
Step 2: Add the fractions.
Step 3: Add the whole numbers.

70. Noel had 8 hours to do his chores. If he
finished them in 6 hours, how many
hours did he have left?
2
3
3
1

87. Assignment: