Adding and Subtracting Rational Numbers

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

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

• add

• subtract

What is the rule for subtracting integers?

• Add and Keep
• Keep Change Change
• Keep Change Flip

When adding decimals with the same sign you.....

• subtract and take the sign of the larger number
• add the opposite
• add and keep the sign
• subtract and keep the sign

When adding decimals with different signs you....

• subtract and take the sign of the larger number
• add the opposite
• add and keep the sign
• subtract and keep the sign

Rewrite the problem as addition.

-5.66 - (-4.1)

• 5.66 + (-4.1)

• -5.66 + 4.1

• -5.66 + (-4.1)

• -5.66 - 4.1

-40 + 15.05= 

• 55.05
• 24.95
• -24.95
• 14.65

-23.4 - 3.4= 

• -20
• 26.8
• -26.8
• 20

What is the value of 18 - 23.2 ?

• -5.2
• -5.8 
• 5.2
• 5.8

What is the value of 18 - 23.2 ?

• -5.2
• -5.8 
• 5.2
• 5.8