Five and twenty-one hundredths
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Five hundred and twenty one billions or billion In scientific notation it is: 5.21*1011
521698/1000 = 521.698 so there are 521 thousands
First you need to make a fraction, which I think is easiest. Fractions, decimals, and percents are interchangable. Write 6/521. This is the same as 6 divided by 521. (The fraction bar also means divide.) Which equals .0115, rounded off. Now multiply this by 100, (percent means per cent, cent latin for hundred) to convert it back to percentages. Tada, 6 is 1.15% of 521!
521 times 21 = 10941
6 / 521 = 0.011516Converting decimal to a percentage: 0.011516 * 100 = 1.15%