CAT Exam > CAT Videos > Quantitative Aptitude (Quant) > Multiplication Trick: Multiply Two Numbers that are Just Above the Base
Multiplication Trick: Multiply Two Numbers that are Just Above the Base Video Lecture | Quantitative Aptitude (Quant)
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FAQs on Multiplication Trick: Multiply Two Numbers that are Just Above the Base Video Lecture - Quantitative Aptitude (Quant)
| 1. How does the multiplication trick of multiplying two numbers just above the base work? |  |
Ans. The multiplication trick involves multiplying two numbers that are just above the base. To do this, you first subtract the base from each of the numbers you want to multiply. Then, multiply the resulting numbers together. Finally, add the base to the product obtained. This trick allows you to quickly multiply numbers and is particularly useful when dealing with numbers close to a base value.
| 2. Can this multiplication trick be applied to any two numbers? | |
Ans. Yes, this multiplication trick can be applied to any two numbers. However, it is most effective when the numbers you want to multiply are close to a base value. By subtracting the base and adding it back at the end, you simplify the calculation and speed up the process.
| 3. What is the advantage of using this multiplication trick? | |
Ans. The advantage of using this multiplication trick is that it allows you to quickly multiply numbers by simplifying the calculation. By subtracting the base and adding it back at the end, you eliminate the need for complex multiplication steps. This can be particularly helpful when performing mental calculations or when dealing with large numbers.
| 4. Can you provide an example to illustrate how this multiplication trick works? | |
Ans. Sure! Let's say we want to multiply 105 by 108 using the multiplication trick. First, we subtract the base (100) from each number: 105 - 100 = 5 and 108 - 100 = 8. Then, we multiply these resulting numbers together: 5 x 8 = 40. Finally, we add the base back to the product: 40 + 100 = 140. So, 105 multiplied by 108 is equal to 140.
| 5. Are there any limitations or cases where this multiplication trick may not be applicable? | |
Ans. The multiplication trick of multiplying two numbers just above the base may not be as effective when the numbers are far from the base value or when dealing with decimals. In such cases, it is often more efficient to use traditional multiplication methods. Additionally, this trick may not be suitable for complex calculations involving multiple numbers or when high precision is required.
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