정수와 유리수 연습문제 — OpenStax Prealgebra · 6.1절 · 10번

OpenStax Prealgebra · 6.1절 · 10번우리말 번역

각 소수를 퍼센트로 나타내세요. ⓐ $\,1.05\,$ ⓑ $\,0.075$

영어 원문 보기

Convert each decimal to a percent: ⓐ $\,1.05\,$ ⓑ $\,0.075$

정답·풀이 보기

$1.05>1$ 이므로 결과가 $100\%$ 보다 크다는 점에 주목한다.

원본 교재 풀이(영어)


ⓐ
	$1.05$
Write as a fraction.	$1\frac{5}{100}$
Write as an improper fraction. The denominator is 100.	$\frac{105}{100}$
Write this ratio as a percent.	$105\%$

Notice that since $1.05>1,$ the result is more than $100\%.$


ⓑ
	$0.075$
Write as a fraction. The denominator is 1,000.	$\frac{75}{1,000}$
Divide the numerator and denominator by 10, so that the denominator is 100.	$\frac{7.5}{100}$
Write this ratio as a percent.	$7.5\%$

한 번 더 — 비슷한 문제OpenStax Prealgebra · 3.2절 · 2번우리말 번역

간단히 하세요: $8+2(5+1).$

답 쓰고 채점

다 풀었으면 정답 확인

$20$