Least Common Denominator

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

Daniel Math Academy · Grade 5 Math

Answer Key

G.3 Least Common Denominator · ★★☆ Medium

1. 118
2. 240
3. 330
4. 430
5. 540
6. 636
7. 772
8. 810
9. 960
10. 1020
11. 1172
12. 1245
13. 1312
14. 1420