Number and Operations—Fractions: Solving Word Problems with Fraction Addition and Subtraction (CCSS.4.NF.5)
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Common Core 4th Grade Math › Number and Operations—Fractions: Solving Word Problems with Fraction Addition and Subtraction (CCSS.4.NF.5)
Which fraction is equal to $\frac{1}{10}$?
$\frac{1}{100}$
$\frac{100}{1}$
$\frac{10}{100}$
$\frac{11}{100}$
Explanation
Multiply the numerator and denominator by 10: $\frac{1}{10}=\frac{1\times10}{10\times10}=\frac{10}{100}$. The others either make it smaller, flip it, or change the numerator incorrectly.
Which fraction is equal to $\frac{3}{10}$?
$\frac{30}{100}$
$\frac{3}{100}$
$\frac{100}{3}$
$\frac{30}{10}$
Explanation
Multiply the numerator and denominator by 10: $\frac{3}{10}=\frac{3\times10}{10\times10}=\frac{30}{100}$. The others either divide by 10, flip the fraction, or change the value.
Which fraction is equal to $\frac{7}{10}$?
$\frac{7}{100}$
$\frac{70}{100}$
$\frac{100}{7}$
$\frac{17}{100}$
Explanation
Multiply the numerator and denominator by 10: $\frac{7}{10}=\frac{7\times10}{10\times10}=\frac{70}{100}$. The distractors show common mistakes like putting the 7 over 100 or flipping.
Which fraction is equal to $\frac{9}{10}$?
$\frac{90}{10}$
$\frac{9}{100}$
$\frac{100}{9}$
$\frac{90}{100}$
Explanation
Multiply the numerator and denominator by 10: $\frac{9}{10}=\frac{9\times10}{10\times10}=\frac{90}{100}$. The other options change the value of the fraction.