8.4 Estimation by rounding fractions

$\frac{5}{8}+\frac{5}{\text{12}}$

$\frac{7}{9}+\frac{3}{5}$

$8\frac{4}{\text{15}}+3\frac{7}{\text{10}}$

$\text{16}\frac{1}{20}+4\frac{7}{8}$

$\frac{5}{6}+\frac{7}{8}$

$\frac{3}{8}+\frac{\text{11}}{\text{12}}$

$\frac{9}{\text{10}}+\frac{3}{5}$

$\frac{\text{13}}{\text{15}}+\frac{1}{\text{20}}$

$\frac{3}{\text{20}}+\frac{6}{\text{25}}$

$\frac{1}{\text{12}}+\frac{4}{5}$

$\frac{\text{15}}{\text{16}}+\frac{1}{\text{12}}$

$\frac{\text{29}}{\text{30}}+\frac{\text{11}}{\text{20}}$

$\frac{5}{\text{12}}+6\frac{4}{\text{11}}$

$\frac{3}{7}+8\frac{4}{\text{15}}$

$\frac{9}{\text{10}}+2\frac{3}{8}$

$\frac{\text{19}}{\text{20}}+\text{15}\frac{5}{9}$

$8\frac{3}{5}+4\frac{1}{\text{20}}$

$5\frac{3}{\text{20}}+2\frac{8}{\text{15}}$

$9\frac{1}{\text{15}}+6\frac{4}{5}$

$7\frac{5}{\text{12}}+\text{10}\frac{1}{\text{16}}$

$3\frac{\text{11}}{\text{20}}+2\frac{\text{13}}{\text{25}}+1\frac{7}{8}$

$6\frac{1}{\text{12}}+1\frac{1}{\text{10}}+5\frac{5}{6}$

$\frac{\text{15}}{\text{16}}-\frac{7}{8}$

$\frac{\text{12}}{\text{25}}-\frac{9}{\text{20}}$

( [link] ) The fact that
$(\text{a first number}\cdot \text{a second number})\cdot \text{a third number}=\text{a first number}\cdot (\text{a second number}\cdot \text{a third number})$
is an example of which property of multiplication?

( [link] ) Find the quotient: $\frac{\text{14}}{\text{15}}÷\frac{4}{\text{45}}$ .

( [link] ) Find the difference: $3\frac{5}{9}-2\frac{2}{3}$ .

( [link] ) Find the quotient: $4\text{.}\text{6}÷\text{0}\text{.}\text{11}$ .

( [link] ) Use the distributive property to compute the product: $\text{25}\cdot \text{37}$ .