Renaldo will write StartFraction 3 over 20 EndFraction as a decimal. Which of the following methods should he use? Multiply the fraction by StartFraction 5 over 5 EndFraction to get a denominator of 100 and then write the numerator as hundredths using a decimal point. Multiply the fraction by One-fifth to get a denominator of 100 and then write the numerator as hundredths using a decimal point. Multiply the fraction by StartFraction 33.3 over 33.3 EndFraction to get a numerator of 100 and then write the denominator as hundredths using a decimal point. Multiply the fraction by 33.3 to get a numerator of 100 and then write the denominator as hundredths using a decimal point.
Answers
Given : Renaldo will write 3/20 as decimal
To find : Which of methods should he use
Multiply the fraction by 5/5 to get a denominator of 100 and then write the numerator as hundredths using a decimal point.
Multiply the fraction by 1/5 to get a denominator of 100 and then write the numerator as hundredths using a decimal point
Multiply the fraction by 33.3/33.3 to get a numerator of 100 and then write the denominator as hundredths using a decimal point
Multiply the fraction by 33.3 to get a numerator of 100 and then write the denominator as hundredths using a decimal point.
Solution:
We need to get 100 in denominator so last two options are discarded
Multiply the fraction by 1/5 will change the number
We need to multiply with 1 (5/5)
Hence correct Method is
Multiply the fraction by 5/5 to get a denominator of 100 and then write the numerator as hundredths using a decimal point.
3/20 * 5/5
= 3 * 5 / (20 * 5)
= 15/100
= 0.15
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