FutureStarr

A 17 Percent of 30

# 17 Percent of 30

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AT&T has allotted three hours a week to be destroyed by any arbitrary group. What they don’t tell you is that it’s not just any group; it’s a team of marketing professionals. But 2015 was a watershed year. This year, more than 300 teams competed in the B2C version of the game, and the power and potential of word-of-mouth marketing were more interesting than ever.

### Divide

As your maths skills develop, you can begin to see other ways of arriving at the same answer. The laptop example above is quite straightforward and with practise, you can use your mental maths skills to think about this problem in a different way to make it easier. In this case, you are trying to find 20%, so instead of finding 1% and then multiplying it by 20, you can find 10% and then simply double it. We know that 10% is the same as 1/10th and we can divide a number by 10 by moving the decimal place one place to left (removing a zero from 500). Therefore 10% of £500 is £50 and 20% is £100.

In this case it can be helpful if, instead of thinking of the division symbol ‘÷’ as meaning ‘divided by’, we can substitute the words ‘out of’. We use this often in the context of test results, for example 8/10 or ‘8 out of 10’ correct answers. So we calculate the ‘number of managers out of the whole staff’. When we use words to describe the calculation, it can help it to make more sense. (Source: www.skillsyouneed.com)

### Number

Remember that in decimal multiplication, you multiply as if there were no decimal points, and the answer will have as many “decimal digits” to the right of the decimal point as the total number of decimal digits of all of the factors. So when you multiply 0.7 × 80, think of multiplying 7 × 80 = 560. Since 0.7 has one decimal digit, and 80 has none, the answer has one decimal digit: 56.0 Thus, 0.7 × 80 = 56.

As your maths skills develop, you can begin to see other ways of arriving at the same answer. The laptop example above is quite straightforward and with practise, you can use your mental maths skills to think about this problem in a different way to make it easier. In this case, you are trying to find 20%, so instead of finding 1% and then multiplying it by 20, you can find 10% and then simply double it. We know that 10% is the same as 1/10th and we can divide a number by 10 by moving the decimal place one place to left (removing a zero from 500). Therefore 10% of £500 is £50 and 20% is £100. (Source: www.skillsyouneed.com)

### Value

Here is a Percentage Calculator to solve similar calculations such as 51 is 17 percent of what number. You can solve this type of calculation with your values by entering them into the calculator's fields, and click 'Calculate' to get the result and explanation. (Source:

0.225 is the fraction of staff that are managers, expressed as a decimal. To convert this number to a percentage, we need to multiply it by 100. Multiplying by 100 is the same as dividing by a hundred except you move the numbers the other way on the place values scale. So 0.225 becomes 22.5. (Source: www.skillsyouneed.com)

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