Unit Review: Adding & subtracting fractions

J.1J.2Add or subtract. Write each answer in simplest form.

1. 1
   $\frac{3}{5}-\frac{4}{9}=$ 
2. 2
   $\frac{2}{3}+\frac{1}{7}=$ 
3. 3
   $\frac{5}{6}+\frac{5}{9}=$ 
4. 4
   $\frac{7}{8}-\frac{1}{3}=$ 
5. 5
   $4\frac{11}{12}-3\frac{1}{4}=$ 
6. 6
   $2\frac{1}{4}+5\frac{5}{8}=$ 
7. 7
   $1\frac{3}{8}+5\frac{1}{2}=$ 
8. 8
   $2\frac{5}{12}+3\frac{1}{2}=$ 

J.3Round each mixed number to the nearest whole number. Then estimate.

1. 9
   $9\frac{7}{10}-2\frac{1}{6}\approx$ 
2. 10
   $4\frac{1}{12}-3\frac{1}{8}\approx$ 
3. 11
   $6\frac{1}{4}-1\frac{2}{3}\approx$ 
4. 12
   $6\frac{3}{8}-2\frac{1}{3}\approx$ 

J.1J.2Add or subtract. Write each answer in simplest form.

1. 1$\frac{7}{45}$
2. 2$\frac{17}{21}$
3. 3$1\frac{7}{18}$
4. 4$\frac{13}{24}$
5. 5$1\frac{2}{3}$
6. 6$7\frac{7}{8}$
7. 7$6\frac{7}{8}$
8. 8$5\frac{11}{12}$

J.3Estimate Sums & Differences of Mixed Numbers

1. 9$10-2=8$
2. 10$4-3=1$
3. 11$6-2=4$
4. 12$6-2=4$