Add and Subtract Rational Numbers

Any number that can be written as a fraction

• opposite

• rational number

• absolute value

• Integer

Find the sum:

-10 + 20

• -10

• 10

• 0

• 30

Find the sum:

3 + (-7)

• 4

• -10

• -4

• 10

What is the least common denominator you could use to subtract 1/6 and 1/4?

• 24

• 16

• 20

• 12

• 1/12
• 1
• 2/35
• 23/25

After a pizza party there are 4 2/3 pizzas left over. If the pizzas are divided so that party goers can take home 1/6 of a pizza, how many guests can take home pizza?

• 26 guests

• 28 guests

• 8 guests

• 33 guests

Fill in the blank for the following rule: If the rational numbers have same signs, ______________ the absolute values and keep the common sign.

• add

• subtract

• multiply

• divide

3 + -7

• 10

• 4

• -10

• -4

Theo had a balance of -$4 in his savings account. After making a deposit, he has $25 in his account. What is the overall change to his account?

• $29

• $25

• $24

• $30

-10 + 10

• 20

• 0

• -20

• 1,000,000