Addition and Subtraction of Rational Numbers

-8 3/4 + 1 3/10 = 

• -7 9/20

• 7 9/20

• -7 3/4

• 7 3/4

Following the integer rules, would you add or subtract the fractions?

• add, the answer would be positive

• add, the answer would be negative

• subtract, the answer will be positive

• subtract the answer will be negative

6  3/4 -  -2  4/5=

• 9  11/20

• -9  11/20

• 4  11/20

• -4  11/20

Make sure your final answer is in simplest form!

• -5/3

• -10/12

• 0

What is the value of the following expression?

• -72

• -8 and 2/3

• 40 and 1/3

• 72

What is the value of the following expression?

• -12 and 19/21

• -12 and 1/2

• -2 and 3/4

• -2 and 5/21

When adding or subtracting RATIONAL NUMBERS with LIKE DENOMINATOR denominator you should

• multiply the denominators

• add or subtract the numerators

• keep the denominator

• simplify if need

When adding or subtracting rational numbers, what must you have?

• Common Numerator

• Quick Answering Skills

• Common Numbers

• Common Denominators

2-(-6)

• 2

• 6

• 8

• -8

-2-(-7)

• 5

• -5

• 9

• -9