Addition and subtraction of decimal fractions - Examples, Exercises and Solutions

Simple Operations with Decimal Numbers

We will solve addition and subtraction operations of decimal numbers in vertical form, always keeping in mind the following rules:
• All the rules that are applicable to the addition and subtraction of whole numbers also apply to decimal numbers.
• The decimal points must always be aligned one under the other.
• Numbers must be written in an orderly manner - both to the right of the decimal point and to its left (tenths under tenths, hundredths under hundredths, and so on)

Suggested Topics to Practice in Advance

  1. Converting a decimal fraction to a mixed number
  2. What is a Decimal Number?
  3. Decimal Fractions
  4. Reducing and Expanding Decimal Numbers

Practice Addition and subtraction of decimal fractions

examples with solutions for addition and subtraction of decimal fractions

Exercise #1

0.75+0.35= 0.75+0.35=

Video Solution

Answer

1.1

Exercise #2

Determine whether the exercise is correctly written or not.

The position of the decimal point corresponds.

312.54+1203.22

Video Solution

Answer

Not true

Exercise #3

Determine whether the exercise is correctly written or not.

The position of the decimal point corresponds..

6.31+216.222

Video Solution

Answer

True

Exercise #4

Determine whether the exercise is correctly written or not.

The position of the decimal point corresponds.

21.52+3.4

Video Solution

Answer

True

Exercise #5

Determine whether the exercise is correctly written or not.

The position of the decimal point corresponds.

La posición del punto decimal coincide.

3.05+213.22

Video Solution

Answer

Not true

examples with solutions for addition and subtraction of decimal fractions

Exercise #1

Determine whether the exercise is correctly written or not.

The position of the decimal point corresponds.

3.05+53.2

Video Solution

Answer

Not true

Exercise #2

Circle the correct answer to the following exercise:

5.4+3.22

Video Solution

Answer

8.62

Exercise #3

Circle the correct answer to the following exercise:

1.02+6.4

Video Solution

Answer

7.42

Exercise #4

Circle the correct answer to the following exercise:

6.55+3.412

Video Solution

Answer

9.962

Exercise #5

Circle the correct answer to the following exercise:

111.25+112.3

Video Solution

Answer

223.55

examples with solutions for addition and subtraction of decimal fractions

Exercise #1

Circle the correct answer to the following exercise:

2.1012+3.212

Video Solution

Answer

5.3132

Exercise #2

Circle the correct answer to the following exercise:

115.32+115.102

Video Solution

Answer

230.422

Exercise #3

Solve the following exercise and circle the appropriate answer:

3.512+4.313

Video Solution

Answer

7.825

Exercise #4

Solve the following exercise and circle the appropriate answer:

21.38+13.41

Video Solution

Answer

34.79

Exercise #5

Solve the following exercise and circle the appropriate answer:

13.29-12.13

Video Solution

Answer

1.16

Topics learned in later sections

  1. Comparison of Decimal Numbers
  2. Converting Decimals to Fractions