Decimal Fractions Addition and Subtraction

• Line up decimals with the greater absolute value on top.

• Get common denominators.

• Keep - Change - Opposite

• Be rational.

Using what decimal operations, should you line up the decimals?

• adding and subtracting 

• multiplying and dividing

• adding and multiplying 

• subtracting and dividing

Which operations require finding a common denominator?

• multiplication 

• addition 

• addition and subtraction 

• division 

Solve: 1.23+10.56 = ? AND 53.78-15.79

• 11.79; 37.91

• -11.79; -37.91

• 11.97; 37.99

• 11.79; 37.99

Kyle has two numbers 2.376 and 0.122.
What is the sum of both the numbers?

​ ​ ​ (a)  

What is the difference of both the numbers?

​ ​ (b)  

• 2.498

• 3.498

• 1.498

• 2.254

• 1.456

• 0.876

• 1.75

James brought a fresh 2-liter bottle of sweet tea to school. He drank 0.29 liter before lunch and 0.189 liter after lunch. He tried to offer the rest to Mr. Blow, but Mr. Blow said, "Seriously?!" How much tea was left at the end of the day?

Chance has two numbers 2.376 and 0.122.
What is the sum of both the numbers?

​ ​ ​ (a)  

What is the difference of both the numbers?

​ ​ (b)  

• 2.498

• 3.498

• 1.498

• 2.254

• 1.456

• 0.876

• 1.75

The opposite of addition is

• Adding three numbers

• Subtraction

• Multiplication

• Division