Let's solve each of these division problems step by step. When dividing by a fraction, we
multiply by its reciprocal. For dividing a whole number by a fraction, or a fraction by a whole number, the same rule applies:
flip the divisor and multiply.
---
a) $ 6 \div \frac{1}{4} $
Convert to multiplication by the reciprocal:
$$
6 \div \frac{1}{4} = 6 \times \frac{4}{1} = 24
$$
✔ Answer: 24
---
b) $ \frac{1}{5} \div 8 $
Write 8 as a fraction: $ \frac{8}{1} $
$$
\frac{1}{5} \div \frac{8}{1} = \frac{1}{5} \times \frac{1}{8} = \frac{1}{40}
$$
✔ Answer: $ \frac{1}{40} $
---
c) $ 7 \div \frac{2}{3} $
$$
7 \div \frac{2}{3} = 7 \times \frac{3}{2} = \frac{21}{2} = 10\frac{1}{2}
$$
✔ Answer: $ \frac{21}{2} $ or $ 10\frac{1}{2} $
---
d) $ 5 \div \frac{2}{5} $
$$
5 \div \frac{2}{5} = 5 \times \frac{5}{2} = \frac{25}{2} = 12\frac{1}{2}
$$
✔ Answer: $ \frac{25}{2} $ or $ 12\frac{1}{2} $
---
e) $ \frac{3}{4} \div 15 $
Write 15 as $ \frac{15}{1} $
$$
\frac{3}{4} \div \frac{15}{1} = \frac{3}{4} \times \frac{1}{15} = \frac{3}{60} = \frac{1}{20}
$$
✔ Answer: $ \frac{1}{20} $
---
f) $ \frac{6}{7} \div 12 $
$$
\frac{6}{7} \div \frac{12}{1} = \frac{6}{7} \times \frac{1}{12} = \frac{6}{84} = \frac{1}{14}
$$
✔ Answer: $ \frac{1}{14} $
---
g) $ \frac{5}{6} \div 5 $
$$
\frac{5}{6} \div \frac{5}{1} = \frac{5}{6} \times \frac{1}{5} = \frac{5}{30} = \frac{1}{6}
$$
✔ Answer: $ \frac{1}{6} $
---
h) $ 4 \div \frac{2}{5} $
$$
4 \div \frac{2}{5} = 4 \times \frac{5}{2} = \frac{20}{2} = 10
$$
✔ Answer: 10
---
i) $ \frac{2}{7} \div 7 $
$$
\frac{2}{7} \div \frac{7}{1} = \frac{2}{7} \times \frac{1}{7} = \frac{2}{49}
$$
✔ Answer: $ \frac{2}{49} $
---
j) $ 10 \div \frac{3}{4} $
$$
10 \div \frac{3}{4} = 10 \times \frac{4}{3} = \frac{40}{3} = 13\frac{1}{3}
$$
✔ Answer: $ \frac{40}{3} $ or $ 13\frac{1}{3} $
---
✔ Final Answers:
a) $ 24 $
b) $ \frac{1}{40} $
c) $ \frac{21}{2} $ or $ 10\frac{1}{2} $
d) $ \frac{25}{2} $ or $ 12\frac{1}{2} $
e) $ \frac{1}{20} $
f) $ \frac{1}{14} $
g) $ \frac{1}{6} $
h) $ 10 $
i) $ \frac{2}{49} $
j) $ \frac{40}{3} $ or $ 13\frac{1}{3} $
Let me know if you'd like these in mixed numbers or decimals!
Parent Tip: Review the logic above to help your child master the concept of dividing whole numbers by fractions worksheet.