GOVERNMENT JOBS – MATHS TRICKS FOR GOVERNMENT JOBS ,UPSC, CIVIL SERVICES, SSC BANKPO.
GOVERNMENT JOBS – MATHS TRICKS FOR GOVERNMENT JOBS ,UPSC, CIVIL SERVICES, SSC BANKPO.
Preparing for government exams like UPSC, SSC, Bank PO, and others requires strong mathematical skills, especially in the quantitative aptitude section. Here are some effective math tricks and shortcuts to enhance your calculation speed and accuracy:
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Essential Math Tricks for Competitive Exams
1. Multiplying Two-Digit Numbers Ending with 5
To square numbers ending with 5:
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Example: 25225^2
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Multiply the tens digit (2) by its next number (3): 2×3=62 \times 3 = 6
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Append 25: 625625WIREDLeverage Edu
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This method simplifies squaring numbers like 35, 45, etc.
2. Quick Percentage Calculations
To find 5% of a number:
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Example: 5% of 685
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Move the decimal one place left: 68.5
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Divide by 2: 68.5÷2=34.2568.5 \div 2 = 34.25
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This approach is useful for calculating discounts, interest rates, etc.
3. Multiplying Numbers with Same Tens Digit and Units Digit Adding to 10
For numbers like 42 and 48:
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Multiply the tens digit (4) by its next number (5): 4×5=204 \times 5 = 20
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Multiply the units digits: 2×8=162 \times 8 = 16
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Combine: 20162016Leverage Edu
This trick speeds up multiplication of such number pairs.
4. Divisibility Rules
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Divisible by 9: If the sum of digits is divisible by 9.
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Example: 738 → 7+3+8=187+3+8=18, and 18 is divisible by 9.Leverage Edu
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Divisible by 4: If the last two digits form a number divisible by 4.
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Example: 316 → 16 is divisible by 4.Leverage Edu
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These rules help quickly identify factors without full division.
5. Fast Addition Using Rounding
To add numbers like 48 and 77:
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Round 48 to 50 and 77 to 80: 50+80=13050 + 80 = 130
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Subtract the excess: 130−(2+3)=125130 – (2 + 3) = 125
This method simplifies mental addition by using round numbers.
Additional Resources
For more detailed explanations and practice problems, consider the following resources:
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BYJU’S: Offers 10 simple math tricks for competitive exams.
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GeeksforGeeks: Provides 30 math tricks for fast calculations.
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Testbook: Shares SSC-specific math tricks and formulas.
Recommended Video Tutorials
Visual learners may find these video tutorials helpful:
These videos cover various math tricks and shortcuts tailored for competitive exams.BYJU’S
By mastering these tricks and regularly practicing, you can enhance your mathematical proficiency and perform more efficiently in competitive exams. If you need further assistance or specific topic explanations, feel free to ask!