Bell Ringer
GPA page 154 (60-62)
Bell Ringer Answers:
60. ​24
61. ​60
62. ​21
9/1/16
3‐5 & 3‐6​ ​Adding and Subtracting Like & Unlike
Fractions
I can​ add and subtract rational numbers with like and unlike
denominators.
Remember:
1)Integers Rules​:
■ Adding:
■ Subtracting:
2) Adding/Subtracting Decimals​: Line up decimal points and place
values (larger # on top).
3) Adding/Subtracting Fractions​: Must have a common denominator
(least common multiple ​LCM​)
EXAMPLE 1.​ Find each sum or difference. Write in simplest form.
7
3
A) 2 - 7
B) 15 + 25
C) 0.3 + (-1.2)
D)​ − 8 10
+ 3 10
E)​ 5 14
− 3 34
6x2
F)​ y 2
+
5x2
y2
G)​ 3a
13
− 5a
13 EXAMPLE 2.​ Find each sum or difference. Write in simplest form.
2
3
1
7
A) − 3 7 − 5 14 B) − 10 9 + 9 45 C) 12
+ 34 + 78
D)
− 35 56 − 23.3 Homework​:
GPA page 152 (14-29, 32-37, 41-42)