Adding and Subtracting Decimals

Two rock samples have masses of 74.25 grams and 8.46 grams. What is the total mas?

• 82.71 grams

• 82.60 grams

• 82.81 grams

• 82.50 grams

Two rock samples have masses of 74.25 grams and 8.46 grams. What is the estimated total mass if you round the decimals to the nearest tenth?

• 82.7 grams

• 82.6 grams

• 82.8 grams

• 82.5 grams

What is the sum? 3.22 + 8.28

• 11.50

• 11.40

• 11.60

• 11.30

Which decimal makes this equation true? 7.16 + ______ = 14.43

• 7.27

• 7.17

• 7.26

• 7.25

Bob bought a basketball for $45.30 and a backpack for $26.73. 

What is the total amount Bob spent on both items?

• $60.00
• $75.53

• $80.25
• $72.03

Bob bought a basketball for $45.30 and a backpack for $26.73. 

 If Bob paid using 4 twenty dollar bills, how much change did he get?

• $7.97
• $12.97

• $5.97

• $10.97

 1. Find the difference.  7.2 - 3.05

• 3.15
• 4.15
• 5.25
• 6.10

 2.What is the sum? 3.41 + 2.4

• 5.21
• 6.01
• 5.81
• 4.81

Round 43.12 to the nearest whole number

• 42
• 44
• 43.5
• 43

 Round 53.45 to the nearest tenth

• 53.4
• 54.0
• 53.5
• 53.0