1. Understanding Mixed Fraction-Decimal Problems
Competitive-exam questions often combine fractions, mixed fractions, decimals and whole numbers in the same expression or word problem. The main difficulty is usually not the arithmetic itself, but choosing the most convenient numerical form before calculating.
Central Idea:
Fractions and decimals are simply different representations of numbers. Convert them into a common convenient form before performing mixed calculations.
Example:
3/4 + 0.5
Method 1 — Convert decimal to fraction:
0.5=1/2
3/4+1/2=3/4+2/4=5/4.
Method 2 — Convert fraction to decimal:
3/4=0.75
0.75+0.5=1.25.
Both answers represent the same value.
Exam Tip:
Do not convert mechanically. Choose the form that produces the shortest calculation.
2. Choosing Fraction Form or Decimal Form
A good choice of representation can reduce a long question to a few simple steps.
Prefer Decimal Form When:
• Fractions such as 1/2, 1/4, 3/4, 1/5, 3/5, 1/8 etc. have easy decimal values.
• Most numbers in the expression are already decimals.
• Addition or subtraction is the main operation.
• The final answer is expected in decimal form.
Prefer Fraction Form When:
• Repeating decimals are involved.
• Multiplication/division allows easy cancellation.
• Exact values are required.
• Decimal conversion would produce long recurring values.
Example:
2.75 + 3/4
Since 3/4=0.75:
2.75+0.75=3.50.
Example:
7/9 ÷ 0.5
Convert 0.5=1/2.
7/9÷1/2
=7/9×2
=14/9.
3. Mixed Addition and Subtraction
Method:
1. Convert numbers into a convenient common form.
2. Align decimal points if using decimals.
3. Find a common denominator if using fractions.
4. Perform addition/subtraction carefully.
Example:
3.75 + 4/5 − 1.2
4/5=0.8.
3.75+0.8−1.2
=4.55−1.2
=3.35.
Example:
2 1/4 + 0.625
2 1/4=2.25.
2.25+0.625=2.875.
Common Mistake:
Do not treat 3/4 as0.34 or0.75 as75/10. Always use the correct place value.
4. Mixed Multiplication and Division
Key Strategy:
For multiplication and division, fraction form often provides easier cancellation.
Example:
0.75×8/15
0.75=3/4.
3/4×8/15
=2/5
=0.4.
Example:
1.2÷3/5
1.2=6/5.
6/5÷3/5
=6/5×5/3
=2.
Shortcut:
Convert terminating decimals such as0.25,0.5,0.75,1.25 into familiar fractions when cancellation is possible.
5. Fraction of a Decimal Quantity
The word “of” represents multiplication.
Rule:
Fraction of Decimal Quantity
= Fraction × Decimal Quantity
Example:
3/5 of2.5
=3/5×2.5
=3/5×5/2
=3/2=1.5.
Example:
7/8 of4.8
=7/8×4.8
=7/8×24/5
=4.2.
Exam Tip:
When the decimal can be written as a simple fraction, convert it before multiplying.
6. Remaining-Part Problems
Many aptitude questions ask what fraction or decimal portion remains after some part has been used, travelled, spent or completed.
Basic Rule:
Remaining Part = Whole − Used Part
Example:
If3/8 of a quantity is used:
Remaining fraction
=1−3/8
=5/8.
Example with Mixed Forms:
Suppose0.35 of a quantity and then2/5 of the original quantity are used.
2/5=0.4.
Total used=0.35+0.4=0.75.
Remaining=1−0.75=0.25=1/4.
Exam Trap:
Check whether the second fraction refers to the original quantity or to the remaining quantity. These lead to different answers.
7. Successive Fraction-of-Remainder Problems
In many questions, a fraction is taken first and another fraction is then taken from what remains.
General Pattern:
If fraction a is first used, remaining fraction=1−a.
If fraction b of the remainder is then used:
Final remaining fraction=(1−a)(1−b).
Example:
A person travels2/5 of a journey first and then1/3 of the remaining journey.
After first stage:
Remaining=1−2/5=3/5.
Second stage uses:
1/3×3/5=1/5 of total.
Final remaining:
3/5−1/5=2/5.
Direct Shortcut:
Final remaining
=(1−2/5)(1−1/3)
=3/5×2/3
=2/5.
Exam Tip:
“1/3 of the remaining” is not the same as “1/3 of the total”.
8. Finding the Original Quantity
Sometimes a fraction or decimal part of an unknown quantity is given and the original quantity must be found.
Rule:
If fraction f of quantity Q equals A:
fQ=A
Therefore:
Q=A/f
Example:
3/4 of a number is2.1.
Number
=2.1÷3/4
=2.1×4/3
=2.8.
Example:
0.4 of a quantity is18.
Quantity=18÷0.4=45.
Shortcut:
Convert decimal coefficients into simple fractions when division becomes easier.
9. Mixed Measurement and Quantity Problems
Fractions and decimals frequently occur in problems involving distance, length, weight, money and other measurable quantities.
Important:
Before performing arithmetic, make sure all quantities are expressed in compatible units.
Example — Length:
A rope is5.5 m long. If2 3/4 m is cut off, how much remains?
2 3/4=2.75.
Remaining=5.5−2.75=2.75 m.
Example — Quantity:
3/8 of240 kg=
3/8×240=90 kg.
Scope Note:
Detailed percentage, ratio, profit-loss, time-work and speed-distance applications are covered in their respective later chapters. Here the focus is on fraction-decimal arithmetic underlying such questions.
10. Comparing Mixed Fractions and Decimals
Fractions, mixed fractions and decimals may all appear together in comparison or ordering questions.
Method:
Convert all values into either decimals or fractions and then compare.
Example:
Compare:
2 1/4, 2.3 and9/4.
2 1/4=2.25
9/4=2.25.
Therefore:
2 1/4 = 9/4 < 2.3.
Exam Tip:
For interval questions such as “which value lies between A and B?”, decimal conversion is often very fast when all values terminate easily.
11. BODMAS in Mixed Fraction-Decimal Expressions
Order:
Brackets → Orders → Division/Multiplication → Addition/Subtraction
Equal Priority Rule:
Division and multiplication at the same level are performed from left to right. Addition and subtraction follow the same left-to-right rule.
Example:
0.8÷2/5×3/4
0.8=4/5.
4/5÷2/5×3/4
=2×3/4
=3/2=1.5.
Example:
[2.5+3/4]−[1.2−1/5]
3/4=0.75 and1/5=0.2.
=3.25−1.0
=2.25.
Exam Trap:
Do not perform addition before multiplication or division merely because it appears earlier in the expression.
12. Fast Calculation and Answer Checking
Shortcut 1:
Memorise common conversions:
1/2=0.5, 1/4=0.25, 3/4=0.75, 1/5=0.2, 1/8=0.125.
Shortcut 2:
Use fractions for multiplication/division when cancellation is available.
Shortcut 3:
Use decimals for easy addition/subtraction.
Shortcut 4:
For successive remaining-part problems, multiply the remaining fractions directly.
Shortcut 5:
Estimate the size of the answer before finalising it.
Example:
3/4 of5 is clearly less than5 and close to4.
Exact answer=3.75.
An answer such as7.5 should therefore be rejected immediately.
13. Common Exam Traps
Trap 1:
Converting an easy exact fraction into a long recurring decimal unnecessarily.
Trap 2:
Using0.3 as the exact value of1/3.
Trap 3:
Treating a fraction of the remaining quantity as a fraction of the original quantity.
Trap 4:
Adding fractions and decimals without first converting them into compatible forms.
Trap 5:
Ignoring unit conversion in measurement problems.
Trap 6:
Forgetting to convert a mixed fraction into a usable form before multiplication or division.
Trap 7:
Ignoring BODMAS in mixed expressions.
Trap 8:
Using an approximate decimal when the exact fraction is required.
Trap 9:
Failing to check whether the final answer should be expressed as a fraction, decimal, mixed fraction or quantity with units.
14. Quick Revision
Remember:
• Fractions and decimals are alternative forms of the same numbers.
• Choose the form that makes calculation shortest.
• Easy fractions may be converted to decimals for addition/subtraction.
• Fraction form is often better for multiplication/division and cancellation.
• “Of” means multiplication.
• Remaining part=1−used fraction when the whole is represented by1.
• For successive use, identify whether the next fraction is of the whole or of the remainder.
• Final remaining after successive fractions a and b=(1−a)(1−b), when b is taken from the remainder.
• If f of Q=A, then Q=A/f.
• Convert all measurements to compatible units before calculation.
• Mixed fraction-decimal comparison becomes easier after conversion to one common form.
• Follow BODMAS normally.
• Exact fractions are preferable to rounded decimals when precision matters.
• Estimate the expected size of the answer to detect decimal-point mistakes.
15. Verified Previous-Year Questions
RRB NTPC PYQ
Mixed Fraction-Decimal Expression
16 March 2026 · Graduate CBT-I · Shift II
Q1. Simplify:
[3.75 + 4/5] − [3.5 − 8/20]
A. 1.5
B. 1.4
C. 1.35
D. 1.45
Correct Answer: D. 1.45
4/5=0.8 and8/20=0.4.
First bracket:
3.75+0.8=4.55.
Second bracket:
3.5−0.4=3.1.
Required value:
4.55−3.1=1.45.
RRB NTPC PYQ
Mixed BODMAS
13 October 2025 · Graduate CBT-II · Shift I
Q2. Simplify:
0.848 ÷ 0.8 × 1/2 + 0.125 ÷ (5/2) × 0.4
A. 0.55
B. 0.73
C. 0.53
D. 0.75
Correct Answer: A. 0.55
First part:
0.848÷0.8×1/2
=1.06×0.5
=0.53.
Second part:
0.125÷(5/2)×0.4
=0.125×2/5×0.4
=0.05×0.4
=0.02.
Total=0.53+0.02=0.55.
RRC Group D PYQ
Successive Fractions
1 October 2018 · Shift III
Q3. A person walks 2/5 of a total journey and then covers one-third of the remaining distance by bus. What fraction of the total journey is still left?
A. 3/5
B. 2/5
C. 7/15
D. 1/5
Correct Answer: B. 2/5
After walking2/5:
Remaining=3/5.
Bus covers1/3 of3/5:
=1/5 of total journey.
Total covered:
2/5+1/5=3/5.
Remaining=2/5.
SSC GD PYQ
Mixed Fraction Comparison
20 May 2026 · Shift III
Q4. Which of the following lies between 2 3/10 and 2 4/5?
A. 41/18
B. 59/20
C. 47/18
D. 62/21
Correct Answer: C. 47/18
2 3/10=2.3
2 4/5=2.8.
Now:
47/18≈2.61.
Therefore:
2.3<47/18<2.8.
16. Practice MCQs
Practice MCQ
Q1. Evaluate [2.75+3/4]−[1.2+1/5].
A. 1.9
B. 2.0
C. 2.1
D. 2.2
Correct Answer: C. 2.1
3/4=0.75 and1/5=0.2. Therefore3.5−1.4=2.1.
Practice MCQ
Q2. Find 0.84÷(7/10).
A. 0.8
B. 1.0
C. 1.2
D. 1.4
Correct Answer: C. 1.2
0.84÷0.7=1.2.
Practice MCQ
Q3. Find 3/5 of 2.5.
A. 1.2
B. 1.5
C. 1.8
D. 2.0
Correct Answer: B. 1.5
3/5×2.5=3/5×5/2=3/2=1.5.
Practice MCQ
Q4. Find 0.4 of 7/8.
A. 7/10
B. 7/20
C. 7/25
D. 3/8
Correct Answer: B. 7/20
0.4=2/5. Thus2/5×7/8=14/40=7/20.
Practice MCQ
Q5. A person completes 2/5 of a task and then completes 1/4 of the remaining part. What fraction remains?
A. 7/20
B. 9/20
C. 11/20
D. 3/5
Correct Answer: B. 9/20
After2/5, remaining=3/5. After completing1/4 of the remainder,3/4 of it remains:3/5×3/4=9/20.
Practice MCQ
Q6. If 0.35 and 2/5 of a quantity are used, what fraction of the original quantity remains?
A. 1/5
B. 1/4
C. 3/10
D. 7/20
Correct Answer: B. 1/4
0.35+0.4=0.75. Remaining=0.25=1/4.
Practice MCQ
Q7. Evaluate (1.5+3/4)÷0.9.
A. 2
B. 2.25
C. 2.5
D. 3
Correct Answer: C. 2.5
1.5+0.75=2.25. Then2.25÷0.9=2.5.
Practice MCQ
Q8. If 3/4 of a number is 2.1, find the number.
A. 2.4
B. 2.6
C. 2.8
D. 3.2
Correct Answer: C. 2.8
Number=2.1÷3/4=2.1×4/3=2.8.
Practice MCQ
Q9. A rope is 5.5 m long. If 2 3/4 m is removed, what length remains?
A. 2.25 m
B. 2.50 m
C. 2.75 m
D. 3.25 m
Correct Answer: C. 2.75 m
2 3/4=2.75. Hence5.5−2.75=2.75 m.
Practice MCQ
Q10. Evaluate 0.6×5/6+0.25.
A. 0.65
B. 0.70
C. 0.75
D. 0.80
Correct Answer: C. 0.75
0.6=3/5. Thus3/5×5/6=1/2=0.5. Then0.5+0.25=0.75.
1. Mixed Fraction-Decimal Problems की समझ
Competitive examinations में fractions, mixed fractions, decimals एवं whole numbers एक ही expression या word problem में दिए जा सकते हैं। ऐसे प्रश्नों में मुख्य challenge calculation से अधिक सही numerical form चुनना होता है।
Central Idea:
Fractions और decimals एक ही numbers को represent करने के अलग-अलग forms हैं। Calculation से पहले उन्हें convenient common form में convert करें।
उदाहरण:
3/4+0.5
0.5=1/2 लेने पर:
3/4+1/2=5/4।
या3/4=0.75 लेने पर:
0.75+0.5=1.25।
दोनों same value हैं।
Exam Tip:
हर number को mechanically fraction या decimal में convert न करें। जो form calculation को shortest बनाए वही चुनें।
2. Fraction Form या Decimal Form कैसे चुनें?
Decimal Form Prefer करें जब:
• Fractions के decimal values आसान हों।
• Expression में अधिकांश values decimals हों।
• Addition/subtraction मुख्य operation हो।
• Answer decimal में required हो।
Fraction Form Prefer करें जब:
• Recurring decimals हों।
• Multiplication/division में cancellation possible हो।
• Exact answer चाहिए।
• Decimal conversion long recurring value दे।
उदाहरण:
2.75+3/4
3/4=0.75।
Answer=3.50।
उदाहरण:
7/9÷0.5
0.5=1/2।
7/9÷1/2
=7/9×2
=14/9।
3. Mixed Addition एवं Subtraction
Method:
1. Numbers को convenient common form में बदलें।
2. Decimal form में decimal points align करें।
3. Fraction form में common denominator लें।
4. Addition/subtraction करें।
उदाहरण:
3.75+4/5−1.2
4/5=0.8।
3.75+0.8−1.2
=4.55−1.2
=3.35।
उदाहरण:
2 1/4+0.625
2 1/4=2.25।
Answer=2.875।
Common Mistake:
3/4 को0.34 समझना या0.75 को75/10 लिखना गलत है।
4. Mixed Multiplication एवं Division
Key Strategy:
Multiplication एवं division में fraction form अक्सर cancellation के कारण आसान होता है।
उदाहरण:
0.75×8/15
0.75=3/4।
3/4×8/15
=2/5=0.4।
उदाहरण:
1.2÷3/5
1.2=6/5।
6/5×5/3=2।
Shortcut:
0.25,0.5,0.75,1.25 जैसे decimals को familiar fractions में बदलकर cancellation करें।
5. Decimal Quantity का Fraction
Rule:
“Of” का अर्थ multiplication है।
Fraction of Decimal Quantity
=Fraction×Decimal Quantity
उदाहरण:
3/5 of2.5
=3/5×5/2
=1.5।
उदाहरण:
7/8 of4.8
=7/8×24/5
=4.2।
Exam Tip:
Decimal का simple fractional form बन रहा हो तो multiplication से पहले convert करना useful है।
6. Remaining-Part Problems
Basic Rule:
Remaining Part=Whole−Used Part
उदाहरण:
यदि3/8 quantity use हुई है:
Remaining=1−3/8=5/8।
Mixed Form Example:
यदि original quantity का0.35 एवं2/5 use हुआ:
2/5=0.4।
Total used=0.75।
Remaining=0.25=1/4।
Exam Trap:
यह जरूर देखें कि second fraction original quantity का है या remaining quantity का। दोनों cases अलग हैं।
7. Successive Fraction-of-Remainder Problems
General Pattern:
पहले fraction a use हो तो remaining=1−a।
फिर remaining का fraction b use हो तो final remaining:
(1−a)(1−b)
उदाहरण:
एक व्यक्ति journey का2/5 पहले travel करता है तथा remaining journey का1/3 बाद में travel करता है।
पहले remaining=3/5।
Bus द्वारा travelled=
1/3×3/5=1/5।
Final remaining=2/5।
Direct Shortcut:
(1−2/5)(1−1/3)
=3/5×2/3
=2/5।
Exam Tip:
“Remaining का1/3” और “Total का1/3” अलग-अलग quantities हैं।
8. Original Quantity ज्ञात करना
Rule:
यदि quantity Q का fraction f=A है:
fQ=A
तो:
Q=A/f
उदाहरण:
किसी number का3/4=2.1 है।
Number=2.1÷3/4
=2.1×4/3
=2.8।
उदाहरण:
किसी quantity का0.4=18 है।
Quantity=18÷0.4=45।
Shortcut:
Decimal coefficient का simple fraction बनाकर division आसान किया जा सकता है।
9. Mixed Measurement एवं Quantity Problems
महत्वपूर्ण:
Arithmetic शुरू करने से पहले सभी quantities की units compatible करें।
Length Example:
एक rope5.5 m लंबी है। उसमें से2 3/4 m काटा गया।
2 3/4=2.75।
Remaining=2.75 m।
Quantity Example:
240 kg का3/8
=3/8×240
=90 kg।
Scope Note:
Percentage, Ratio, Profit-Loss, Time & Work तथा Time-Speed-Distance के detailed applications उनके respective chapters में cover होंगे। यहाँ focus underlying fraction-decimal arithmetic पर है।
10. Mixed Fractions एवं Decimals की Comparison
Method:
सभी values को fraction या decimal के same common form में बदलकर compare करें।
उदाहरण:
2 1/4,2.3 एवं9/4 को compare करें।
2 1/4=2.25
9/4=2.25।
इसलिए:
2 1/4=9/4<2.3।
Exam Tip:
“Which value lies between...” जैसे questions में terminating values होने पर decimal comparison बहुत fast हो सकता है।
11. Mixed Fraction-Decimal Expressions में BODMAS
Order:
Brackets → Orders → Division/Multiplication → Addition/Subtraction
Equal Priority Rule:
Division एवं multiplication same level पर left-to-right solve होते हैं। Addition एवं subtraction भी left-to-right।
उदाहरण:
0.8÷2/5×3/4
0.8=4/5।
4/5÷2/5×3/4
=2×3/4
=1.5।
उदाहरण:
[2.5+3/4]−[1.2−1/5]
=3.25−1.0
=2.25।
Exam Trap:
Addition expression में पहले दिखाई देने के कारण multiplication/division से पहले solve न करें।
12. Fast Calculation एवं Answer Checking
Shortcut 1:
Common conversions याद रखें:
1/2=0.5,1/4=0.25,3/4=0.75,1/5=0.2,1/8=0.125।
Shortcut 2:
Multiplication/division में cancellation possible हो तो fraction form use करें।
Shortcut 3:
Easy addition/subtraction में decimal form use करें।
Shortcut 4:
Successive remaining-part questions में remaining fractions directly multiply करें।
Shortcut 5:
Final answer की approximate size पहले estimate करें।
उदाहरण:
5 का3/4,5 से छोटा और4 के आसपास होना चाहिए।
Exact answer=3.75।
इसलिए7.5 जैसा answer तुरंत reject किया जा सकता है।
13. Common Exam Traps
Trap 1:
Easy exact fraction को unnecessarily recurring decimal में बदलना।
Trap 2:
1/3 का exact value0.3 मान लेना।
Trap 3:
Remaining quantity के fraction को original quantity का fraction मान लेना।
Trap 4:
Fractions एवं decimals को compatible form में convert किए बिना add करना।
Trap 5:
Measurement problem में unit conversion ignore करना।
Trap 6:
Mixed fraction को multiplication/division से पहले proper usable form में convert न करना।
Trap 7:
BODMAS ignore करना।
Trap 8:
Exact fraction required होने पर rounded decimal use करना।
Trap 9:
Answer किस form—fraction, decimal, mixed fraction या unit quantity—में चाहिए, यह check न करना।
14. Quick Revision
एक नज़र में:
• Fraction एवं decimal same numbers के alternative forms हैं।
• Calculation shortest बनाने वाला form चुनें।
• Easy fractions को addition/subtraction के लिए decimal में convert कर सकते हैं।
• Multiplication/division में fraction form अक्सर बेहतर है।
• “Of” का अर्थ multiplication।
• Remaining part=1−used fraction।
• Successive fraction में यह देखें कि next fraction whole का है या remainder का।
• यदि remainder का b fraction use हुआ तो final remaining=(1−a)(1−b)।
• यदि Q का f=A, तो Q=A/f।
• Measurement questions में units compatible करें।
• Mixed comparison में सभी values को same form में convert करें।
• BODMAS follow करें।
• Precision के लिए exact fractions useful हैं।
• Final answer की size estimate करके errors detect करें।
15. Verified Previous-Year Questions
RRB NTPC PYQ
Mixed Fraction-Decimal Expression
16 मार्च 2026 · Graduate CBT-I · Shift II
प्रश्न 1. Simplify करें:
[3.75+4/5]−[3.5−8/20]
A. 1.5
B. 1.4
C. 1.35
D. 1.45
सही उत्तर: D. 1.45
4/5=0.8 तथा8/20=0.4।
पहला bracket=4.55।
दूसरा bracket=3.1।
Difference=1.45।
RRB NTPC PYQ
Mixed BODMAS
13 अक्टूबर 2025 · Graduate CBT-II · Shift I
प्रश्न 2. Simplify करें:
0.848÷0.8×1/2 + 0.125÷(5/2)×0.4
A. 0.55
B. 0.73
C. 0.53
D. 0.75
सही उत्तर: A. 0.55
First part=0.53।
Second part=0.02।
Total=0.55।
RRC Group D PYQ
Successive Fractions
1 अक्टूबर 2018 · Shift III
प्रश्न 3. एक व्यक्ति total journey का2/5 पैदल चलता है और फिर remaining distance का1/3 bus से cover करता है। Total journey का कितना fraction अभी भी remaining है?
A. 3/5
B. 2/5
C. 7/15
D. 1/5
सही उत्तर: B. 2/5
पहले remaining=3/5।
Bus द्वारा covered=1/3×3/5=1/5।
Total covered=3/5।
Remaining=2/5।
SSC GD PYQ
Mixed Fraction Comparison
20 मई 2026 · Shift III
प्रश्न 4. निम्न में से कौन-सा number 2 3/10 एवं2 4/5 के बीच है?
A. 41/18
B. 59/20
C. 47/18
D. 62/21
सही उत्तर: C. 47/18
2 3/10=2.3
2 4/5=2.8
47/18≈2.61।
इसलिए:
2.3<47/18<2.8।
16. Practice MCQs
Practice MCQ
प्रश्न 1. [2.75+3/4]−[1.2+1/5] का मान ज्ञात करें।
A. 1.9
B. 2.0
C. 2.1
D. 2.2
सही उत्तर: C. 2.1
3/4=0.75 तथा1/5=0.2। इसलिए3.5−1.4=2.1। Practice MCQ
प्रश्न 2. 0.84÷7/10 ज्ञात करें।
A. 0.8
B. 1.0
C. 1.2
D. 1.4
सही उत्तर: C. 1.2
0.84÷0.7=1.2। Practice MCQ
प्रश्न 3. 2.5 का3/5 कितना होगा?
A. 1.2
B. 1.5
C. 1.8
D. 2.0
सही उत्तर: B. 1.5
3/5×2.5=1.5। Practice MCQ
प्रश्न 4. 7/8 का0.4 कितना होगा?
A. 7/10
B. 7/20
C. 7/25
D. 3/8
सही उत्तर: B. 7/20
0.4=2/5। इसलिए2/5×7/8=7/20। Practice MCQ
प्रश्न 5. किसी task का2/5 complete करने के बाद remaining task का1/4 complete किया जाता है। कितना fraction remaining रहेगा?
A. 7/20
B. 9/20
C. 11/20
D. 3/5
सही उत्तर: B. 9/20
पहले remaining3/5। उसका3/4 remaining रहेगा। इसलिए3/5×3/4=9/20। Practice MCQ
प्रश्न 6. किसी original quantity का0.35 एवं2/5 use हो जाए तो कितना fraction remaining होगा?
A. 1/5
B. 1/4
C. 3/10
D. 7/20
सही उत्तर: B. 1/4
Used=0.35+0.4=0.75। Remaining=0.25=1/4। Practice MCQ
प्रश्न 7. (1.5+3/4)÷0.9 का मान ज्ञात करें।
A. 2
B. 2.25
C. 2.5
D. 3
सही उत्तर: C. 2.5
1.5+0.75=2.25। फिर2.25÷0.9=2.5। Practice MCQ
प्रश्न 8. किसी number का3/4=2.1 है। Number ज्ञात करें।
A. 2.4
B. 2.6
C. 2.8
D. 3.2
सही उत्तर: C. 2.8
Number=2.1÷3/4=2.8। Practice MCQ
प्रश्न 9. एक rope5.5 m लंबी है। उसमें से2 3/4 m काट दिया जाए तो कितनी length remaining रहेगी?
A. 2.25 m
B. 2.50 m
C. 2.75 m
D. 3.25 m
सही उत्तर: C. 2.75 m
5.5−2.75=2.75 m। Practice MCQ
प्रश्न 10. 0.6×5/6+0.25 का मान ज्ञात करें।
A. 0.65
B. 0.70
C. 0.75
D. 0.80
सही उत्तर: C. 0.75
0.6×5/6=0.5। फिर0.5+0.25=0.75।