Fraction arithmetic practice sheet with addition and subtraction equations.
Worksheet with fraction addition and subtraction problems for students to solve.
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Show Answer Key & Explanations
Step-by-step solution for: Third Grade Math Worksheets - Twisty Noodle
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Show Answer Key & Explanations
Step-by-step solution for: Third Grade Math Worksheets - Twisty Noodle
To solve the given problems, we need to perform arithmetic operations on fractions. The operations include addition and subtraction. Let's solve each problem step by step.
1. Find a common denominator: The denominators are 3 and 5. The least common denominator (LCD) is 15.
2. Convert fractions:
- $\frac{2}{3} = \frac{2 \times 5}{3 \times 5} = \frac{10}{15}$
- $\frac{1}{5} = \frac{1 \times 3}{5 \times 3} = \frac{3}{15}$
3. Subtract the fractions:
$$
\frac{10}{15} - \frac{3}{15} = \frac{10 - 3}{15} = \frac{7}{15}
$$
Answer: $\frac{7}{15}$
---
1. Common denominator: Both fractions already have the same denominator (9).
2. Subtract the numerators:
$$
\frac{4}{9} - \frac{1}{9} = \frac{4 - 1}{9} = \frac{3}{9}
$$
3. Simplify:
$$
\frac{3}{9} = \frac{1}{3}
$$
Answer: $\frac{1}{3}$
---
1. Common denominator: Both fractions already have the same denominator (7).
2. Add the numerators:
$$
\frac{3}{7} + \frac{1}{7} = \frac{3 + 1}{7} = \frac{4}{7}
$$
Answer: $\frac{4}{7}$
---
1. Common denominator: Both fractions already have the same denominator (10).
2. Subtract the numerators:
$$
\frac{7}{10} - \frac{4}{10} = \frac{7 - 4}{10} = \frac{3}{10}
$$
Answer: $\frac{3}{10}$
---
1. Find a common denominator: The denominators are 8 and 6. The LCD is 24.
2. Convert fractions:
- $\frac{4}{8} = \frac{4 \times 3}{8 \times 3} = \frac{12}{24}$
- $\frac{1}{6} = \frac{1 \times 4}{6 \times 4} = \frac{4}{24}$
3. Subtract the fractions:
$$
\frac{12}{24} - \frac{4}{24} = \frac{12 - 4}{24} = \frac{8}{24}
$$
4. Simplify:
$$
\frac{8}{24} = \frac{1}{3}
$$
Answer: $\frac{1}{3}$
---
1. Common denominator: Both fractions already have the same denominator (4).
2. Add the numerators:
$$
\frac{2}{4} + \frac{1}{4} = \frac{2 + 1}{4} = \frac{3}{4}
$$
Answer: $\frac{3}{4}$
---
1. Common denominator: Both fractions already have the same denominator (3).
2. Add the numerators:
$$
\frac{1}{3} + \frac{1}{3} = \frac{1 + 1}{3} = \frac{2}{3}
$$
Answer: $\frac{2}{3}$
---
1. Common denominator: Both fractions already have the same denominator (8).
2. Subtract the numerators:
$$
\frac{3}{8} - \frac{1}{8} = \frac{3 - 1}{8} = \frac{2}{8}
$$
3. Simplify:
$$
\frac{2}{8} = \frac{1}{4}
$$
Answer: $\frac{1}{4}$
---
1. Common denominator: Both fractions already have the same denominator (12).
2. Subtract the numerators:
$$
\frac{4}{12} - \frac{12}{12} = \frac{4 - 12}{12} = \frac{-8}{12}
$$
3. Simplify:
$$
\frac{-8}{12} = \frac{-2}{3}
$$
Answer: $-\frac{2}{3}$
---
1. Common denominator: Both fractions already have the same denominator (6).
2. Add the numerators:
$$
\frac{3}{6} + \frac{6}{6} = \frac{3 + 6}{6} = \frac{9}{6}
$$
3. Simplify:
$$
\frac{9}{6} = \frac{3}{2}
$$
Answer: $\frac{3}{2}$
---
$$
\boxed{
\begin{aligned}
&\frac{7}{15}, \quad \frac{1}{3}, \quad \frac{4}{7}, \quad \frac{3}{10}, \quad \frac{1}{3}, \quad \frac{3}{4}, \quad \frac{2}{3}, \quad \frac{1}{4}, \quad -\frac{2}{3}, \quad \frac{3}{2}
\end{aligned}
}
$$
Problem 1: $\frac{2}{3} - \frac{1}{5}$
1. Find a common denominator: The denominators are 3 and 5. The least common denominator (LCD) is 15.
2. Convert fractions:
- $\frac{2}{3} = \frac{2 \times 5}{3 \times 5} = \frac{10}{15}$
- $\frac{1}{5} = \frac{1 \times 3}{5 \times 3} = \frac{3}{15}$
3. Subtract the fractions:
$$
\frac{10}{15} - \frac{3}{15} = \frac{10 - 3}{15} = \frac{7}{15}
$$
Answer: $\frac{7}{15}$
---
Problem 2: $\frac{4}{9} - \frac{1}{9}$
1. Common denominator: Both fractions already have the same denominator (9).
2. Subtract the numerators:
$$
\frac{4}{9} - \frac{1}{9} = \frac{4 - 1}{9} = \frac{3}{9}
$$
3. Simplify:
$$
\frac{3}{9} = \frac{1}{3}
$$
Answer: $\frac{1}{3}$
---
Problem 3: $\frac{3}{7} + \frac{1}{7}$
1. Common denominator: Both fractions already have the same denominator (7).
2. Add the numerators:
$$
\frac{3}{7} + \frac{1}{7} = \frac{3 + 1}{7} = \frac{4}{7}
$$
Answer: $\frac{4}{7}$
---
Problem 4: $\frac{7}{10} - \frac{4}{10}$
1. Common denominator: Both fractions already have the same denominator (10).
2. Subtract the numerators:
$$
\frac{7}{10} - \frac{4}{10} = \frac{7 - 4}{10} = \frac{3}{10}
$$
Answer: $\frac{3}{10}$
---
Problem 5: $\frac{4}{8} - \frac{1}{6}$
1. Find a common denominator: The denominators are 8 and 6. The LCD is 24.
2. Convert fractions:
- $\frac{4}{8} = \frac{4 \times 3}{8 \times 3} = \frac{12}{24}$
- $\frac{1}{6} = \frac{1 \times 4}{6 \times 4} = \frac{4}{24}$
3. Subtract the fractions:
$$
\frac{12}{24} - \frac{4}{24} = \frac{12 - 4}{24} = \frac{8}{24}
$$
4. Simplify:
$$
\frac{8}{24} = \frac{1}{3}
$$
Answer: $\frac{1}{3}$
---
Problem 6: $\frac{2}{4} + \frac{1}{4}$
1. Common denominator: Both fractions already have the same denominator (4).
2. Add the numerators:
$$
\frac{2}{4} + \frac{1}{4} = \frac{2 + 1}{4} = \frac{3}{4}
$$
Answer: $\frac{3}{4}$
---
Problem 7: $\frac{1}{3} + \frac{1}{3}$
1. Common denominator: Both fractions already have the same denominator (3).
2. Add the numerators:
$$
\frac{1}{3} + \frac{1}{3} = \frac{1 + 1}{3} = \frac{2}{3}
$$
Answer: $\frac{2}{3}$
---
Problem 8: $\frac{3}{8} - \frac{1}{8}$
1. Common denominator: Both fractions already have the same denominator (8).
2. Subtract the numerators:
$$
\frac{3}{8} - \frac{1}{8} = \frac{3 - 1}{8} = \frac{2}{8}
$$
3. Simplify:
$$
\frac{2}{8} = \frac{1}{4}
$$
Answer: $\frac{1}{4}$
---
Problem 9: $\frac{4}{12} - \frac{12}{12}$
1. Common denominator: Both fractions already have the same denominator (12).
2. Subtract the numerators:
$$
\frac{4}{12} - \frac{12}{12} = \frac{4 - 12}{12} = \frac{-8}{12}
$$
3. Simplify:
$$
\frac{-8}{12} = \frac{-2}{3}
$$
Answer: $-\frac{2}{3}$
---
Problem 10: $\frac{3}{6} + \frac{6}{6}$
1. Common denominator: Both fractions already have the same denominator (6).
2. Add the numerators:
$$
\frac{3}{6} + \frac{6}{6} = \frac{3 + 6}{6} = \frac{9}{6}
$$
3. Simplify:
$$
\frac{9}{6} = \frac{3}{2}
$$
Answer: $\frac{3}{2}$
---
Final Answers:
$$
\boxed{
\begin{aligned}
&\frac{7}{15}, \quad \frac{1}{3}, \quad \frac{4}{7}, \quad \frac{3}{10}, \quad \frac{1}{3}, \quad \frac{3}{4}, \quad \frac{2}{3}, \quad \frac{1}{4}, \quad -\frac{2}{3}, \quad \frac{3}{2}
\end{aligned}
}
$$
Parent Tip: Review the logic above to help your child master the concept of third grade math worksheet printable.