Converting decimals to percents example 2 | Decimals | Pre-Algebra | Khan Academy

Understanding how to convert a decimal to a percent comes in really handy sometimes. Let's practice using this problem.

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/percent-intro-pre-alg/e/converting_decimals_to_percents?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra

Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/percent-intro-pre-alg/v/converting-percents-to-decimals-ex-1?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra

Missed the previous lesson?
https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/percent-intro-pre-alg/v/converting-decimals-to-percents-ex-1?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra

Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off!

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1.501을 백분율로
나타내 봅시다

이는 분모가 100인 분수로
바꾸는 것과 같습니다

1.501의 분모는 1입니다

이 수에 100/100을
곱합니다

100/100은 1과 같으므로
곱해도 값이 변하지 않습니다

같은 수를 다르게
표현한 것 뿐이에요

분모는
1 x 100 = 100이 되고

분자는
1.501 x 100이 됩니다

1.501에 10을 곱하면

소수점이 오른쪽으로
한 칸 이동하고

10을 한 번 더 곱하면
소수점이 한 칸 더 이동합니다

10을 두 번 곱한 것은
100을 한 번 곱한 것과 같습니다

소수점이 두 칸 이동하므로
소수점은 여기 있겠네요

따라서 분자는
150.1입니다

1.501을 150.1/100으로
나타냈습니다

이것은 100분의 150.1과 같으며

150.1 퍼센트와 같은 말입니다

150.1%이라고
쓸 수도 있습니다

과정을 간단히 정리하자면

150.1을 얻기 위해
100을 곱한 셈입니다

이것이 백분율을
구하는 방법입니다

% 기호를 꼭 쓰도록 하세요