Problem Solving When Adding and Subtracting Decimals

When adding and subtracting decimals, we ALWAYS line up the decimals.

• True

• False

14 tenths - 5 tenths

When Adding and Subtracting decimals

• We don't line up the Decimal point

• We line up the decimal point

• We get rid of the decimal points.

• We skip the problem

Adding, Subtracting, and Multiplying Decimals Practice

Question 7

Type the number only, no symbols

Mathematical Equivalence

ON

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?

This month, Cecilia has ridden her bike 114.7 miles. BEFORE THAT, she had ridden the bike for a total of 1,468 miles. How many total miles has Cecilia ridden her bike NOW?

• 116.168 miles

• 1,582.7 miles

• 261.5 miles

• 1,353.3 miles

-12.4 + 9.2 + 1 

Mathematical Equivalence

ON

Fill in the blank.

Always _____ the decimal.

What is the first step when adding and subtracting decimals?

• Line up the numbers

• Line up the decimals

• Add or subtract like normal

• Add in placeholders

What is the first step when adding and subtracting decimals?

• Line up the numbers

• Line up the decimals

• Add or subtract like normal

• Add in placeholders