When we add or subtract with decimals, we generally perform the operation in a vertical format. The procedure is the same as with vertical addition, or vertical subtraction. We simply need to make sure that we vertically line up the decimal point for each number in our problem.

Test Objectives
• Demonstrate the ability to add two or more decimals
• Demonstrate the ability to subtract decimals
• Demonstrate the ability to perform mixed addition and subtraction with decimals
Adding Decimals Practice Test:

#1:

Instructions: Perform each indicated operation.

a) 36.541 + 12.9042

b) 13.0015 + 17.201 + 0.3958

#2:

Instructions: Perform each indicated operation.

a) 20.683 - 5.100003

b) 0.5 - 0.413

#3:

Instructions: Perform each indicated operation.

a) 0.3759 + 52.8 + 11.7216

b) 0.24 - 0.001 - 0.08201

#4:

Instructions: Perform each indicated operation.

a) -6.051 + (-0.2753)

b) -2.011 + 5.37

#5:

Instructions: Perform each indicated operation.

a) 14 + (-7.1) + (-0.6305) - (-4.103)

Written Solutions:

#1:

Solutions:

a) 49.4452

b) 30.5983

#2:

Solutions:

a) 15.582997

b) 0.087

#3:

Solutions:

a) 64.8975

b) 0.15699

#4:

Solutions:

a) -6.3263

b) 3.359

#5:

Solutions:

a) 10.3725