# IBPS Exam: Tips for Maths Question Paper

IBPS exam tests one thing to the core – Candidate’s time management skills. This has been proved both in IBPS PO as well as IBPS Clerical Exam. Time Management is a critical thing for IBPS Bank Exams. “How do we manage the time and finish the paper on time?” – one good question asked by all candidates who take up the IBPS exam. Maths or quantitative aptitude part consumes lot of time. We will hardly find maths questions without multiplication and division. Here we have come up with short cut method for percentage calculation:

**How to find 2.5 percent of a number? **

- Choose a number (start with 2 digits and advance to 3 with practice).
- Divide by 4 (or divide twice by 2).
- Move the decimal point one place to the left.

Example:

- If the number selected is 110:
- Divide 110 by 4: 110/4 = 27.5
- Move the decimal point one place to the left : 2.75
- So, 2.5% of 110 = 2.75.

**How to find 5% of a number?**

- Choose a large number (or sum of money).
- Move the decimal point one place to the left.
- Divide by 2 (take half of it).

Example:

- If the amount of money selected is Rs.850:
- Move the decimal point one place to the left.: 85
- Divide by 2: 85/2 = 42.50
- So 5% of Rs.850 = Rs.42.50.

**How to find 15% of a number?**

- Choose a 2-digit number.
- Multiply the number by 3.
- Divide by 2.
- Move the decimal point one place to the left.

Example:

- If the number selected is 43:
- Multiply by 3: 3 × 43 = 129
- Divide by 2: 129/2 = 64.5
- Move the decimal point one place to the left: 6.45
- So 15% of 43 = 6.45

**How to find 20 percent of a number?**

- Choose a 2-digit number.
- Divide the number by 5.

Example:

- If the number selected is 38:
- Divide by 5: 38/5 = 7.6
- So 20% of 38 = 7.6

**How to find 25 percent of a number**

- Divide by 4.

Example:

- If the number selected is 86:
- Divide 86 by 4: 86/4 = 21.5
- So 25% of 86 = 21.5.

**How to find 33 1/3 percent of a number**

- Choose a number.
- Divide the number by 3.

Example:

- If the number selected is 74
- Divide by 3: 74/3 = 24 2/3
- So 33 1/3% of 74 = 24 2/3

**How to find 40 percent of a number**

- Choose a 2-digit number.
- Multiply the number by 4.
- Move the decimal point one place to the left.

Example:

- If the number selected is 21:
- Multiply by 4: 4 × 21 = 84
- Move the decimal point one place to the left: 8.4.
- So 40% of 21 = 8.4.

**How to find 45 percent of a number**

- Choose a 2-digit number.
- Multiply the number by 9.
- Divide by 2.

Move the decimal point one place to the left.

Example:

- If the number selected is 36:
- Multiply by 9: 9 × 36 = 270 + 54 = 324
- Divide by 2: 324/2 = 162
- Move the decimal point one place to the left: 16.2
- So 45% of 36 = 16.2.

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