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Tricks for Quick Multiplication Video Lecture | Quantitative Aptitude (Quant)

185 videos|158 docs|113 tests

FAQs on Tricks for Quick Multiplication Video Lecture - Quantitative Aptitude (Quant)

1. What are some tricks for quick multiplication?
Ans. Some tricks for quick multiplication include using the distributive property, multiplying by powers of 10, using the commutative property, and breaking down numbers into smaller parts.
2. How does using the distributive property help in quick multiplication?
Ans. The distributive property allows us to break down a multiplication problem into smaller, easier calculations. For example, instead of multiplying 27 by 8, we can break it down into (20 x 8) + (7 x 8), which is simpler to calculate mentally.
3. Can you explain how multiplying by powers of 10 can help in quick multiplication?
Ans. Multiplying by powers of 10 involves simply moving the decimal point to the right. For example, if we need to multiply 35 by 100, we can simply move the decimal point two places to the right, resulting in 3,500. This method eliminates the need for multiplying by the digits.
4. How does the commutative property aid in quick multiplication?
Ans. The commutative property states that the order of multiplication does not affect the result. For example, multiplying 6 by 5 is the same as multiplying 5 by 6. By recognizing this property, we can choose the order that makes multiplication easier or involves smaller numbers.
5. How can breaking down numbers into smaller parts help in quick multiplication?
Ans. Breaking down numbers into smaller parts allows us to simplify the multiplication process. For example, instead of multiplying 48 by 7, we can break it down into (40 x 7) + (8 x 7). By multiplying smaller numbers, mental calculations become faster and more manageable.
185 videos|158 docs|113 tests
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