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Sunday, October 28, 2012

- Although I work in the office and a lot of work that makes me tired but still I make a blog Tech News World and still will update it for you because this is part of my hobby who likes the world of technology, especially about the gadget, now we will discuss first about because it is the topic that you are now looking for, please refer to the information I provide in the guarantee for you,

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Article Education tips and tricks,

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I’m back as usual with my tips and tricks, this time around, it’s a mathematics trick, precisely, percentage (%) tricks. They are tricks with which you can find 15 percent, i.e. 15% 20 percent i.e. 20% of any given whole number. Without wasting much time, I’ll start my explanation

Trick for finding 15 percent of any number
1. Choose a 2-digit number.
2. Multiply the number by 3.
3. Divide by 2.
4. Move the decimal point one place to the left.

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

See the pattern
1. If the number selected is 72:
2. Multiply by 3: 3 × 72 = 216
3. Divide by 2: 216/2 = 108
4. Move the decimal point one place to the left: 10.8
5. So 15% of 72 = 10.8.

Trick for finding 20 percent of any number
1. Choose a 2-digit number.
2. Divide the number by 5.

Example:
1. If the number selected is 38:
2. Divide by 5: 38/5 = 7.6
3. So 20% of 38 = 7.6.

See the pattern
1. If the number selected is 74:
2. Divide by 5: 74/5 = 14.8
3. So 20% of 74 = 14.8.


It's as simple as that! in my future posts, I'll be sharing more mathematics tricks. Hit the like button if you like these tricks and use the sharer tools below to share with friends



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