Decimal Fractions MCQs with Answers & Explanations
Number System & Operations
· Mathematics-General Ability
255 Questions• 192 Mins Practice• Updated for 2026 Competitive Exams
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Showing 161–180 of 255 MCQs
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Solved Questions
255 Questions
161
Compute 5.8 * 0.53.
Correct Option
Option A
Explanation
Step-by-step solution: 1. Ignore the decimal points and multiply as whole numbers. 2. Count the total decimal places (three) and place the decimal accordingly. 3. The product is 3.074.
162
Compute 9.0 * 0.85.
Correct Option
Option B
Explanation
Step-by-step solution: 1. Ignore the decimal points and multiply as whole numbers. 2. Count the total decimal places (three) and place the decimal accordingly. 3. The product is 7.65.
163
Find the sum of 3.7 and 0.32.
Correct Option
Option A
Explanation
Step-by-step solution: 1. Align the decimal points for both numbers. 2. Add 3.7 + 0.32 = 4.02. 3. Ensure the result is rounded to three decimal places.
164
Compute 7.8 * 0.73.
Correct Option
Option A
Explanation
Step-by-step solution: 1. Ignore the decimal points and multiply as whole numbers. 2. Count the total decimal places (three) and place the decimal accordingly. 3. The product is 5.694.
165
Find the sum of 6.3 and 0.58.
Correct Option
Option B
Explanation
Step-by-step solution: 1. Align the decimal points for both numbers. 2. Add 6.3 + 0.58 = 6.88. 3. Ensure the result is rounded to three decimal places.
166
Find the sum of 5.3 and 0.48.
Correct Option
Option B
Explanation
Step-by-step solution: 1. Align the decimal points for both numbers. 2. Add 5.3 + 0.48 = 5.78. 3. Ensure the result is rounded to three decimal places.
167
Compute 1.4 * 0.09.
Correct Option
Option C
Explanation
Step-by-step solution: 1. Ignore the decimal points and multiply as whole numbers. 2. Count the total decimal places (three) and place the decimal accordingly. 3. The product is 0.126.
168
Find the sum of 8.5 and 0.8.
Correct Option
Option D
Explanation
Step-by-step solution: 1. Align the decimal points for both numbers. 2. Add 8.5 + 0.8 = 9.3. 3. Ensure the result is rounded to three decimal places.
169
Find the sum of 6.5 and 0.6.
Correct Option
Option C
Explanation
Step-by-step solution: 1. Align the decimal points for both numbers. 2. Add 6.5 + 0.6 = 7.1. 3. Ensure the result is rounded to three decimal places.
170
Compute 11.0 * 1.05.
Correct Option
Option D
Explanation
Step-by-step solution: 1. Ignore the decimal points and multiply as whole numbers. 2. Count the total decimal places (three) and place the decimal accordingly. 3. The product is 11.55.
171
Compute 7.0 * 0.65.
Correct Option
Option B
Explanation
Step-by-step solution: 1. Ignore the decimal points and multiply as whole numbers. 2. Count the total decimal places (three) and place the decimal accordingly. 3. The product is 4.55.
172
Compute 10.2 * 0.97.
Correct Option
Option C
Explanation
Step-by-step solution: 1. Ignore the decimal points and multiply as whole numbers. 2. Count the total decimal places (three) and place the decimal accordingly. 3. The product is 9.894.
173
Compute 3.6 * 0.31.
Correct Option
Option A
Explanation
Step-by-step solution: 1. Ignore the decimal points and multiply as whole numbers. 2. Count the total decimal places (three) and place the decimal accordingly. 3. The product is 1.116.
174
Compute 9.4 * 0.89.
Correct Option
Option D
Explanation
Step-by-step solution: 1. Ignore the decimal points and multiply as whole numbers. 2. Count the total decimal places (three) and place the decimal accordingly. 3. The product is 8.366.
175
Find the sum of 4.7 and 0.42.
Correct Option
Option B
Explanation
Step-by-step solution: 1. Align the decimal points for both numbers. 2. Add 4.7 + 0.42 = 5.12. 3. Ensure the result is rounded to three decimal places.
176
Compute 4.6 * 0.41.
Correct Option
Option D
Explanation
Step-by-step solution: 1. Ignore the decimal points and multiply as whole numbers. 2. Count the total decimal places (three) and place the decimal accordingly. 3. The product is 1.886.
177
Find the sum of 2.5 and 0.2.
Correct Option
Option A
Explanation
Step-by-step solution: 1. Align the decimal points for both numbers. 2. Add 2.5 + 0.2 = 2.7. 3. Ensure the result is rounded to three decimal places.
178
Find the sum of 9.5 and 0.9.
Correct Option
Option D
Explanation
Step-by-step solution: 1. Align the decimal points for both numbers. 2. Add 9.5 + 0.9 = 10.4. 3. Ensure the result is rounded to three decimal places.
179
Compute 9.2 * 0.87.
Correct Option
Option C
Explanation
Step-by-step solution: 1. Ignore the decimal points and multiply as whole numbers. 2. Count the total decimal places (three) and place the decimal accordingly. 3. The product is 8.004.
180
Compute 8.8 * 0.83.
Correct Option
Option B
Explanation
Step-by-step solution: 1. Ignore the decimal points and multiply as whole numbers. 2. Count the total decimal places (three) and place the decimal accordingly. 3. The product is 7.304.
