Let's solve each problem on the
"Dividing fractions by fractions" worksheet step by step. The key rule for dividing fractions is:
>
To divide by a fraction, multiply by its reciprocal.
That means:
$$
\frac{a}{b} \div \frac{c}{d} = \frac{a}{b} \times \frac{d}{c}
$$
We'll apply this rule to each problem.
---
1. $ \frac{1}{4} \div \frac{9}{10} $
$$
= \frac{1}{4} \times \frac{10}{9} = \frac{10}{36} = \frac{5}{18}
$$
✔ Answer: $ \frac{5}{18} $
---
2. $ \frac{5}{9} \div \frac{1}{2} $
$$
= \frac{5}{9} \times \frac{2}{1} = \frac{10}{9} = 1\frac{1}{9}
$$
✔ Answer: $ \frac{10}{9} $ or $ 1\frac{1}{9} $
---
3. $ \frac{1}{3} \div \frac{6}{5} $
$$
= \frac{1}{3} \times \frac{5}{6} = \frac{5}{18}
$$
✔ Answer: $ \frac{5}{18} $
---
4. $ \frac{8}{10} \div \frac{2}{5} $
First simplify $ \frac{8}{10} = \frac{4}{5} $
$$
= \frac{4}{5} \div \frac{2}{5} = \frac{4}{5} \times \frac{5}{2} = \frac{20}{10} = 2
$$
✔ Answer: $ 2 $
---
5. $ \frac{3}{5} \div \frac{7}{7} $
Note: $ \frac{7}{7} = 1 $
$$
= \frac{3}{5} \div 1 = \frac{3}{5}
$$
✔ Answer: $ \frac{3}{5} $
---
6. $ \frac{5}{6} \div \frac{1}{3} $
$$
= \frac{5}{6} \times \frac{3}{1} = \frac{15}{6} = \frac{5}{2} = 2\frac{1}{2}
$$
✔ Answer: $ \frac{5}{2} $ or $ 2\frac{1}{2} $
---
7. $ \frac{5}{10} \div \frac{5}{12} $
Simplify $ \frac{5}{10} = \frac{1}{2} $
$$
= \frac{1}{2} \div \frac{5}{12} = \frac{1}{2} \times \frac{12}{5} = \frac{12}{10} = \frac{6}{5} = 1\frac{1}{5}
$$
✔ Answer: $ \frac{6}{5} $ or $ 1\frac{1}{5} $
---
8. $ \frac{7}{11} \div \frac{1}{4} $
$$
= \frac{7}{11} \times \frac{4}{1} = \frac{28}{11} = 2\frac{6}{11}
$$
✔ Answer: $ \frac{28}{11} $ or $ 2\frac{6}{11} $
---
9. $ \frac{5}{6} \div \frac{5}{6} $
Any number divided by itself is 1:
$$
= \frac{5}{6} \times \frac{6}{5} = \frac{30}{30} = 1
$$
✔ Answer: $ 1 $
---
10. $ \frac{1}{4} \div \frac{1}{3} $
$$
= \frac{1}{4} \times \frac{3}{1} = \frac{3}{4}
$$
✔ Answer: $ \frac{3}{4} $
---
✔ Final Answers:
1. $ \frac{5}{18} $
2. $ \frac{10}{9} $ or $ 1\frac{1}{9} $
3. $ \frac{5}{18} $
4. $ 2 $
5. $ \frac{3}{5} $
6. $ \frac{5}{2} $ or $ 2\frac{1}{2} $
7. $ \frac{6}{5} $ or $ 1\frac{1}{5} $
8. $ \frac{28}{11} $ or $ 2\frac{6}{11} $
9. $ 1 $
10. $ \frac{3}{4} $
---
📝 Summary of Key Steps:
- Always
multiply by the reciprocal of the divisor.
- Simplify fractions before multiplying if possible.
- Convert improper fractions to mixed numbers if needed (as per instructions).
Let me know if you'd like this as a printable answer sheet!
Parent Tip: Review the logic above to help your child master the concept of reciprocal dividing fractions worksheet.