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Daniel Math Academy · Grade 5 Math

Least Common Denominator

Skill G.3 · Simplifying & comparing fractions · ★★☆ Medium · Quarter 3

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Find the least common denominator (LCD).

1. 1
   $\frac{1}{12}$ and $\frac{4}{9}$ 
2. 2
   $\frac{1}{6}$ and $\frac{1}{5}$ 
3. 3
   $\frac{1}{3}$ and $\frac{3}{8}$ 
4. 4
   $\frac{2}{5}$ and $\frac{1}{12}$ 
5. 5
   $\frac{5}{9}$ and $\frac{1}{6}$ 
6. 6
   $\frac{5}{6}$ and $\frac{3}{4}$ 
7. 7
   $\frac{1}{2}$ and $\frac{5}{12}$ 
8. 8
   $\frac{1}{4}$ and $\frac{1}{10}$ 
9. 9
   $\frac{3}{5}$ and $\frac{1}{6}$ 
10. 10
    $\frac{3}{4}$ and $\frac{1}{2}$ 
11. 11
    $\frac{1}{9}$ and $\frac{2}{5}$ 
12. 12
    $\frac{1}{6}$ and $\frac{3}{8}$ 
13. 13
    $\frac{1}{4}$ and $\frac{1}{6}$ 
14. 14
    $\frac{7}{9}$ and $\frac{3}{10}$ 

Daniel Math Academy · Grade 5 Math

Answer Key

G.3 Least Common Denominator · ★★☆ Medium

1. 136
2. 230
3. 324
4. 460
5. 518
6. 612
7. 712
8. 820
9. 930
10. 104
11. 1145
12. 1224
13. 1312
14. 1490