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Martina drew a green line that was $\frac{9}{10}$ of an inch long. Then she drew a purple line that was $\frac{7}{10}$ of an inch long. How much longer was the green line than the purple line? $\newline$ Write your answer as a fraction or as a whole or mixed number. $\newline$ _____ inches

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Add and subtract fractions with like denominators: word problems

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Q. Martina drew a green line that was

\frac{9}{10}

of an inch long. Then she drew a purple line that was

\frac{7}{10}

of an inch long. How much longer was the green line than the purple line?

\newline

Write your answer as a fraction or as a whole or mixed number.

\newline

_____ inches

Identify Lengths: Step $1$ : Identify the lengths of the two lines. $\newline$ Green line = $\frac{9}{10}$ inch, Purple line = $\frac{7}{10}$ inch. $\newline$ Calculate the difference between the two lengths. $\newline$ $\frac{9}{10} - \frac{7}{10} = \frac{2}{10}$
Calculate Difference: Step $2$ : Simplify the result from Step $1$ . $\newline$ $\frac{2}{10}$ can be simplified to $\frac{1}{5}$ by dividing the numerator and the denominator by $2$ . $\newline$ $\frac{1}{5}$ inch is the difference

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