- #1
cyentist
- 16
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Hello!
How can you do e.g. 756 x 675 mentally?
Any good trick?
How can you do e.g. 756 x 675 mentally?
Any good trick?
cyentist said:Hello!
How can you do e.g. 756 x 675 mentally?
Any good trick?
756*675 luckily has special enough numbers. 4*675=2700, and 756 happens to be divisible by 4. So simplifies to 189*27.hilbert2 said:and the numbers here are "special" enough to easily keep track of.
One method is to break down the numbers into smaller, more manageable parts. For example, in the problem 756 x 675, you can break down 756 into 700 and 50, and 675 into 600 and 75. Then, you can multiply each part separately and then add them together to get the final answer.
Yes, there are several tricks that can help with mental multiplication. One common trick is to use the distributive property, where you break down one of the numbers into smaller parts and multiply each part by the other number. Another trick is to use rounding or estimation to get a close approximation of the answer.
Practice and repetition are key to remembering the steps involved in mental multiplication. It can also be helpful to write down the steps and refer to them as you practice. Over time, you will become more familiar with the process and will be able to do it without needing to write down the steps.
Yes, mental math techniques such as breaking down numbers, using estimation, and using the distributive property can be applied to other types of math problems, such as addition, subtraction, and division. These techniques can help make mental math easier and more efficient.
Mental multiplication is a skill that anyone can learn with practice and dedication. While some people may have a natural aptitude for mental math, it is a skill that can be improved upon by anyone through regular practice and using different mental math strategies.