Addition and Subtraction Decimals and Fractions

• Change Mixed numbers into improper fractions.

• Get common denominators and equivalent fractions.

• Follow Adding Rules across the top and keep the same denominator.

• All of the above.

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

• Get common denominators.

• Keep - Change - Opposite

• Be rational.

0.25 + 4/10 - 3/6 =

• 3/20

• 3/15

• 1/20

• 2/3

5/8 - 0.15 + 2/4  - 0.875 =

• 0.5

• 1.2

• 0.1

• 1

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?

0.85 + 0.54 - 1/5 - 2/3 =

• 45/300

• 157/300

• 20/50

• 15/150

2 1/2 - 5/6 - 0.3 - 1/9 = 

• 1.026

• 1.33

• 1.26

• 1.05

2/5 - 1/2 + 0.01 + 1.05 = 

• 1.96

• 1.80

• 1.005

• 1.096

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