Final answer:
To write 3/10 as a percentage, divide 3 by 10 and multiply the result by 100.
Step-by-step explanation:
To write 3/10 as a percentage, you can convert the fraction into a decimal by dividing the numerator (3) by the denominator (10), which equals 0.3. Then, multiply the decimal by 100 to convert it to a percentage. Therefore, 3/10 as a percentage is 30%.
Learn more about Converting Fractions to Percentages