Question

Renaldo will write 3/20 as a decimal. Which of the following methods should he use?

Answer 1

Answer:

1. Multiply the fraction by 5/5 to get a denominator of 100 and then write the numerator as hundredths using a decimal point.

Step-by-step explanation:

Renaldo must use a method that does not alter the value of the original fraction. This means that by multiplying the fraction by a number, the result obtained remains the same as the initial number.

Then the fraction $\frac{3}{20}$ must be multiplied by the same number in the denominator and the numerator. For example:

$\frac{3}{20}*\frac{5}{5}$

$\frac{3}{20}*\frac{33}{33}$

If we multiply $\frac{3}{20}*\frac{5}{5}$ the result is:

$\frac{15}{100}$ To write this fraction in decimal form, we move the comma 2 digits to the left in the following way:

15.0 --------> 0.15.

Then $\frac{15}{100}=\frac{3}{20}=0,15$

The answer is Option 1.

Answer 2

ANSWER

1. Multiply the fraction by 5/5 to get a denominator of 100 and then write the numerator as hundredths using a decimal point.

EXPLANATION

Renaldo wants to write

$\frac{3}{20}$

as a decimal.

He needs a denominator of 100, so he can multiply by

$\frac{5}{5}$

to obtain:

$\frac{3}{20} = \frac{3 \times 5}{20 \times 5}$

This will be

$= \frac{15}{100}$

He can now obtain the decimal equivalent as

$= 0.15$

The correct choice is option 1.