Perform Operations on Multi-Digit Decimals

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

7.9 - 3.47 =

• 11.37
• 4.43
• 3.32
• 4.37

55.78 + 4.6 =

• 60.28
• 55.32
• 56.44
• 60.38

0.3 x 0.5

• 0.15
• 1.5
• 15
• 150

1.2 x 2.1

• 25.2
• 0.36
• 2.52
• 3.6

 Last month, Shelly earned $15.38 for mowing lawns, $6.25 for cleaning her room, and $12.04 for other chores. How much did she earn last month?

• $33.76
• $33.67
• $33.00
• $34.64

Micah had $10.52 after he left the bookstore. If he bought a book for $6.39, how much money did he have before he went to the bookstore?

• $4.13

• $16.19

• $67.22

• $16.91

6.7 - 2.33=

• 4.43
• 4.4
• 4.37
• 4.47

Add.
21 + 4.09 

• 4.30
• 6.19
• 25.09
• 16.91

Leah wants to cut a rope that is 7.2 inches long into four equal pieces. How long was each piece of rope?

• 2.4 inches

• 3.2 inches

• 1.8 inches

• 28.8 inches