Addition and Subtraction of Decimals Quiz - CBSE Class 4 Mathematics

Free practice quiz: Addition and Subtraction of Decimals (CBSE Class 4 Mathematics). 16 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. What is 0.7 + 0.2?

   1. 0.8
   2. 0.9
   3. 0.10
   4. 0.5
   Show answer

   Answer: B. 0.9

   To add 0.7 and 0.2, align the decimal points and add. 0.7 + 0.2 = 0.9.

2. Calculate 2.25 + 4.75.

   1. 6.00
   2. 7.00
   3. 5.00
   4. 5.50
   Show answer

   Answer: B. 7.00

   Align the decimals: 2.25 + 4.75 = 7.00.

3. Calculate 7.8 + 3.6 + 2.1.

   1. 12.5
   2. 13.5
   3. 14.0
   4. 15.0
   Show answer

   Answer: B. 13.5

   First, add 7.8 + 3.6 = 11.4; then, add 11.4 + 2.1 = 13.5.

4. A box contains 24.6 kg of potatoes, and another box contains 11.3 kg. What is the total weight of potatoes in both boxes?

   1. 35.9
   2. 37.0
   3. 36.0
   4. 34.9
   Show answer

   Answer: A. 35.9

   24.6 + 11.3 = 35.9. Add the decimals carefully.

5. If a school has 145.75 meters of fabric and uses 23.45 meters for a project, how much fabric is left?

   1. 122.3
   2. 122.25
   3. 122.30
   4. 122.20
   Show answer

   Answer: C. 122.30

   145.75 - 23.45 = 122.30. Perform the subtraction carefully.

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