2.5e-21 as a fraction

2.5e-21 as a fraction - solution and the full explanation with calculations.

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What is 2.5e-21 as a fraction?

To write 2.5e-21 as a fraction you have to write 2.5e-21 as numerator and put 1 as the denominator. Now you multiply numerator and denominator by 10 as long as you get in numerator the whole number.
2.5e-21 = 2.5e-21/1 = 2.5E-20/10 = 2.5E-19/100 = 2.5E-18/1000 = 2.5E-17/10000 = 2.5E-16/100000 = 2.5E-15/1000000 = 2.5E-14/10000000 = 2.5E-13/100000000 = 2.5E-12/1000000000 = 2.5E-11/10000000000 = 2.5E-10/100000000000 = 2.5E-9/1000000000000 = 2.5E-8/10000000000000 = 2.5E-7/100000000000000 = 2.5E-6/1000000000000000 = 2.5E-5/10000000000000000 = 0.00025/100000000000000000 = 0.0025/1000000000000000000 = 0.025/1.0E+19 = 0.25/1.0E+20 = 2.5/1.0E+21 = 25/1.0E+22

And finally we have:
2.5e-21 as a fraction equals 25/1.0E+22

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2.5e-21 as a fraction