Let's solve each of these problems step by step. The goal is to
simplify improper fractions and express them in their
simplest form, which usually means converting them into a
mixed number (whole number + proper fraction) if needed, and reducing the fraction part to lowest terms.
---
1) Simplify: $ \frac{75}{20} $
- First, divide 75 by 20:
- $ 75 ÷ 20 = 3 $ with a remainder of $ 15 $
- So, $ \frac{75}{20} = 3 \frac{15}{20} $
- Now simplify $ \frac{15}{20} $: both divisible by 5 → $ \frac{3}{4} $
- So, $ \frac{75}{20} = 3 \frac{3}{4} $
But looking at the options:
> (i) $ \frac{35}{2} $
> (ii) $ \frac{25}{4} $
> (iii) $ \frac{15}{4} $
> (iv) $ \frac{25}{15} $
Wait — none of the options are mixed numbers. Let’s check if any of the
improper fractions match $ \frac{75}{20} $ in simplified form.
Simplify $ \frac{75}{20} $:
- Divide numerator and denominator by GCF(75,20) = 5
- $ \frac{75 ÷ 5}{20 ÷ 5} = \frac{15}{4} $
✔ So the simplest form is $ \frac{15}{4} $
Answer: (iii) $ \frac{15}{4} $
---
2) Simplify: $ \frac{48}{36} $
- GCF of 48 and 36 is 12
- $ \frac{48 ÷ 12}{36 ÷ 12} = \frac{4}{3} $
- $ \frac{4}{3} = 1 \frac{1}{3} $
Now look at options:
> (i) $ \frac{24}{18} $ → not simplified
> (ii) $ 1 \frac{1}{3} $
✔
> (iii) $ \frac{24}{5} $ → too big
> (iv) $ 2 \frac{1}{3} $ → too big
So correct answer is:
Answer: (ii) $ 1 \frac{1}{3} $
---
3) Simplify: $ \frac{54}{20} $
- GCF of 54 and 20 is 2
- $ \frac{54 ÷ 2}{20 ÷ 2} = \frac{27}{10} $
- $ \frac{27}{10} = 2 \frac{7}{10} $
Check options:
> (i) $ \frac{27}{15} $ → not simplified
> (ii) $ \frac{5}{4} $ → too small
> (iii) $ 1 \frac{7}{10} $ → wrong
> (iv) $ 2 \frac{7}{10} $
✔
Answer: (iv) $ 2 \frac{7}{10} $
---
4) Simplify: $ \frac{60}{38} $
- GCF of 60 and 38 is 2
- $ \frac{60 ÷ 2}{38 ÷ 2} = \frac{30}{19} $
- $ \frac{30}{19} = 1 \frac{11}{19} $
Now check options:
> (i) $ 1 \frac{10}{19} $ → close but wrong
> (ii) $ \frac{30}{19} $
✔
> (iii) $ \frac{20}{19} $ → too small
> (iv) $ \frac{5}{19} $ → way too small
So $ \frac{30}{19} $ is the simplified improper fraction.
Answer: (ii) $ \frac{30}{19} $
---
5) Simplify: $ \frac{45}{25} $
- GCF of 45 and 25 is 5
- $ \frac{45 ÷ 5}{25 ÷ 5} = \frac{9}{5} $
- $ \frac{9}{5} = 1 \frac{4}{5} $
Options:
> (i) $ 1 \frac{4}{5} $
✔
> (ii) $ \frac{25}{3} $ → no
> (iii) $ \frac{9}{4} $ → no
> (iv) $ 1 \frac{3}{5} $ → no
Answer: (i) $ 1 \frac{4}{5} $
---
6) Simplify: $ \frac{90}{48} $
- GCF of 90 and 48 is 6
- $ \frac{90 ÷ 6}{48 ÷ 6} = \frac{15}{8} $
- $ \frac{15}{8} = 1 \frac{7}{8} $
Now check options:
> (i) $ \frac{45}{24} $ → not simplified
> (ii) $ 1 \frac{5}{8} $ → close but wrong
> (iii) $ \frac{30}{24} $ → not simplified
> (iv) $ \frac{15}{8} $
✔
So $ \frac{15}{8} $ is the simplified improper fraction.
Answer: (iv) $ \frac{15}{8} $
---
✔ Final Answers:
1) (iii) $ \frac{15}{4} $
2) (ii) $ 1 \frac{1}{3} $
3) (iv) $ 2 \frac{7}{10} $
4) (ii) $ \frac{30}{19} $
5) (i) $ 1 \frac{4}{5} $
6) (iv) $ \frac{15}{8} $
Let me know if you'd like this explained visually or with diagrams!
Parent Tip: Review the logic above to help your child master the concept of fractions in simplest form worksheet.