Adding and Subtracting Decimals

7.9 + 18.72 =

The price of apples is normally $0.74 each. If there is an increase in the price of apples by 6 cents, what is the new price of apples?

• $1.36

• $0.80

• $0.68

• $0.748

809.144 - 15.96 =

Jenna bought a bag of gummy bears that cost $2.74, one lollipop that cost 65 cents, and a koala Squishmallow that cost 12 dollars and 50 cents.

She gave the clerk $20.

How much money will she get back in change? 

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

Based on the table, which statement is true?

• The combined mass of the male gorilla and the female gorilla is 253.782 kg

• The mass of the male gorilla is 63.507 kg greater than the mass of the female gorilla

• The female gorilla is 1.28 m shorter than the male gorilla

• The combined height of the male gorilla and the female gorilla is 2.028 m

Gina competed in a gymnastics competition.  Her total score for the balance beam and the vault was 16.75.  She scored 9.3 on the vault.  How much did she score for the balance beam?