분수의 덧셈과 뺄셈 단원 종합

H.1Round each fraction to $0$, $\frac{1}{2}$, or $1$. Then estimate.

1. 1
   $\frac{5}{12}-\frac{1}{8}\approx$ 
2. 2
   $\frac{4}{5}-\frac{2}{3}\approx$ 
3. 3
   $\frac{11}{12}-\frac{2}{3}\approx$ 
4. 4
   $\frac{4}{5}-\frac{2}{5}\approx$ 

H.2Add. Write each answer in simplest form.

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

H.3Subtract. Write each answer in simplest form.

1. 9
   $\frac{4}{5}-\frac{3}{4}=$ 
2. 10
   $\frac{3}{10}-\frac{1}{4}=$ 
3. 11
   $\frac{5}{6}-\frac{5}{12}=$ 
4. 12
   $\frac{2}{3}-\frac{5}{8}=$ 

H.4Add. Write each answer in simplest form.

1. 13
   $\frac{3}{8}+\frac{3}{4}+\frac{1}{2}=$ 
2. 14
   $\frac{4}{5}+\frac{1}{2}+\frac{2}{3}=$ 
3. 15
   $\frac{3}{8}+\frac{1}{6}+\frac{7}{10}=$ 
4. 16
   $\frac{1}{4}+\frac{3}{10}+\frac{1}{6}=$ 

H.5Fill in the missing fraction. Write it in simplest form.

1. 17
   $\frac{19}{24}-\frac{\boxed{}}{\boxed{}}=$ $\frac{3}{8}$
2. 18
   $\frac{8}{15}-\frac{\boxed{}}{\boxed{}}=$ $\frac{1}{3}$
3. 19
   $\frac{\boxed{}}{\boxed{}}-\frac{1}{12}=$ $\frac{5}{6}$
4. 20
   $\frac{11}{12}-\frac{\boxed{}}{\boxed{}}=$ $\frac{2}{3}$

H.6Add or subtract. Write each answer in simplest form.

1. 21
   $\frac{7}{10}-\frac{1}{5}=$ 
2. 22
   $\frac{3}{10}+\frac{1}{3}=$ 
3. 23
   $\frac{2}{5}+\frac{1}{2}=$ 
4. 24
   $\frac{3}{4}+\frac{3}{8}=$ 

H.1Estimate Sums & Differences of Fractions

1. 1$\frac{1}{2}-0=\frac{1}{2}$
2. 2$1-\frac{1}{2}=\frac{1}{2}$
3. 3$1-\frac{1}{2}=\frac{1}{2}$
4. 4$1-\frac{1}{2}=\frac{1}{2}$

H.2Add Fractions with Unlike Denominators

1. 5$1\frac{1}{20}$
2. 6$1\frac{7}{12}$
3. 7$1\frac{1}{3}$
4. 8$1\frac{1}{10}$

H.3Subtract Fractions with Unlike Denominators

1. 9$\frac{1}{20}$
2. 10$\frac{1}{20}$
3. 11$\frac{5}{12}$
4. 12$\frac{1}{24}$

H.4Add 3 or More Fractions

1. 13$1\frac{5}{8}$
2. 14$1\frac{29}{30}$
3. 15$1\frac{29}{120}$
4. 16$\frac{43}{60}$

H.5Complete Addition & Subtraction Sentences

1. 17$\frac{5}{12}$
2. 18$\frac{1}{5}$
3. 19$\frac{11}{12}$
4. 20$\frac{1}{4}$

H.6Adding & Subtracting Fractions (Unlike Denominators)

1. 21$\frac{1}{2}$
2. 22$\frac{19}{30}$
3. 23$\frac{9}{10}$
4. 24$1\frac{1}{8}$