Add Subtract Decimal Fractions

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

• Get common denominators.

• Keep - Change - Opposite

• Be rational.

When adding or subtracting with decimals, you -

• Move decimals out

• Shift decimals 3 places over

• Line up the decimals

• Ignore decimals

The place value right after the decimal is called the __________.

• tens

• tenths

• thousands

• hundrenths

Solve. Rules:

Same sign: add and keep

Different signs: subtract and keep the sign of the bigger number

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?

Solve. Rules

Same sign: add and keep the sign

Different signs: subtract and keep the sign of the bigger number

Solve. Rules:

Same sign: add and keep the sign

Different signs: subtract and keep the sign of the bigger number

Hint: Make the fraction a decimal first. Follow PEMDAS and add and then multiply.

Hint: if your answer is repeating write it like you see below:

0.5 repeating

Write the decimal equivalent for the given fraction. If the answer is repeating write the word repeating in your answer. (example: 0.2 repeating)