Decimal Operations

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

12.9 + 2.9 

• 15.8 
• 12.8
• 15.0
• 7.9999

7.87 + 3.6 =

• 8.23

• 4.27

• 11.47

• 10.93

Find the difference of 4.23 and 2.75

• 2.52

• 14.8

• 8.14

• 1.48

16.06 - 10.1

• 4.96
• 5.95
• 5.96
• 4.96

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?

• 7.45
• 7.54
• 7.045
• 7.054

Jenna bought a bag of gummy bears that cost $2.74. She gave the clerk $10. How much money will she get back in change? 

• $12.74
• $4.36
• $7.26
• $2.64