Grade 4 Adding and Subtracting Fractions Practice Test

Correct answer: A

The correct answer is $\frac{5}{8}$.

1. Identify the common denominator: The fractions already have like denominators, so the parts are the same size.
2. Add or subtract the numerators: Add the numerators 2 and 3 and keep the denominator 8: $\frac{2}{8}$ + $\frac{3}{8}$ = $\frac{5}{8}$.
3. Keep the denominator: The denominator stays the same, so the correct choice is $\frac{5}{8}$.

Correct answer: B

The correct answer is $\frac{5}{6}$.

1. Identify the common denominator: The fractions already have like denominators, so the parts are the same size.
2. Add or subtract the numerators: Add 1 and 4 to get 5, while the denominator stays 6.
3. Keep the denominator: The denominator stays the same, so the correct choice is $\frac{5}{6}$.

Correct answer: C

The correct answer is $\frac{5}{10}$.

1. Identify the common denominator: The fractions already have like denominators, so the parts are the same size.
2. Add or subtract the numerators: The numerators add to 5, so the sum is $\frac{5}{10}$.
3. Keep the denominator: The denominator stays the same, so the correct choice is $\frac{5}{10}$.

Correct answer: D

The correct answer is $\frac{9}{12}$.

1. Identify the common denominator: The fractions already have like denominators, so the parts are the same size.
2. Add or subtract the numerators: Add 5 and 4 to get 9 and keep the common denominator 12.
3. Keep the denominator: The denominator stays the same, so the correct choice is $\frac{9}{12}$.

Correct answer: A

The correct answer is $\frac{8}{9}$.

1. Identify the common denominator: The fractions already have like denominators, so the parts are the same size.
2. Add or subtract the numerators: Seven ninths plus one ninth is eight ninths.
3. Keep the denominator: The denominator stays the same, so the correct choice is $\frac{8}{9}$.

Correct answer: B

The correct answer is $\frac{5}{7}$.

1. Identify the common denominator: The fractions already have like denominators, so the parts are the same size.
2. Add or subtract the numerators: Add the numerators 3 and 2, then keep denominator 7.
3. Keep the denominator: The denominator stays the same, so the correct choice is $\frac{5}{7}$.

Correct answer: C

The correct answer is $\frac{9}{11}$.

1. Identify the common denominator: The fractions already have like denominators, so the parts are the same size.
2. Add or subtract the numerators: The sum of the numerators is 9, so the answer is $\frac{9}{11}$.
3. Keep the denominator: The denominator stays the same, so the correct choice is $\frac{9}{11}$.

Correct answer: D

The correct answer is $\frac{8}{13}$.

1. Identify the common denominator: The fractions already have like denominators, so the parts are the same size.
2. Add or subtract the numerators: Add 6 and 2 to get 8 and keep denominator 13.
3. Keep the denominator: The denominator stays the same, so the correct choice is $\frac{8}{13}$.

Correct answer: A

The correct answer is $\frac{4}{5}$.

1. Identify the common denominator: The fractions already have like denominators, so the parts are the same size.
2. Add or subtract the numerators: One fifth plus three fifths equals four fifths.
3. Keep the denominator: The denominator stays the same, so the correct choice is $\frac{4}{5}$.

Correct answer: B

The correct answer is $\frac{8}{10}$.

1. Identify the common denominator: The fractions already have like denominators, so the parts are the same size.
2. Add or subtract the numerators: Add the numerators 2 and 6 while keeping denominator 10.
3. Keep the denominator: The denominator stays the same, so the correct choice is $\frac{8}{10}$.