When we multiply a whole number by a fraction, we multiply the whole number by the numerator, and the denominator stays the same. 

$\displaystyle \frac{6}{1}\times\frac{7}{10}=\frac{42}{10}$

$\displaystyle \frac{42}{1}\times\frac{1}{10}=\frac{42}{10}$

When we multiply a whole number by a fraction, we multiply the whole number by the numerator, and the denominator stays the same. 

$\displaystyle \frac{7}{1}\times\frac{7}{10}=\frac{49}{10}$

$\displaystyle \frac{49}{1}\times\frac{1}{10}=\frac{49}{10}$

$\displaystyle \frac{4}{1}\times\frac{3}{8}=\frac{12}{8}$

$\displaystyle \frac{12}{8}=1\frac{4}{8}$ because $\displaystyle 8$ can go into $\displaystyle 12$ one time, with $\displaystyle 4$ left over. 

$\displaystyle 1\frac{4}{8}$ is between the whole numbers $\displaystyle 1$ and $\displaystyle 2$. 

$\displaystyle \frac{7}{1}\times\frac{4}{8}=\frac{28}{8}$

$\displaystyle \frac{28}{8}=3\frac{4}{8}$ because $\displaystyle 8$ can go into $\displaystyle 28$ three times, with $\displaystyle 4$ left over. 

$\displaystyle 3\frac{4}{8}$ is between the whole numbers $\displaystyle 3$ and $\displaystyle 4$. 

$\displaystyle \frac{15}{1}\times\frac{2}{8}=\frac{30}{8}$

$\displaystyle \frac{30}{8}=3\frac{6}{8}$ because $\displaystyle 8$ can go into $\displaystyle 30$ three times, with $\displaystyle 6$ left over. 

$\displaystyle 3\frac{6}{8}$ is between the whole numbers $\displaystyle 3$ and $\displaystyle 4$. 

$\displaystyle \frac{5}{1}\times\frac{1}{4}=\frac{5}{4}$

$\displaystyle \frac{5}{4}=1\frac{1}{4}$ because $\displaystyle 4$ can go into $\displaystyle 5$ one time, with $\displaystyle 1$ left over. 

$\displaystyle 1\frac{1}{4}$ is between the whole numbers $\displaystyle 1$ and $\displaystyle 2$. 

$\displaystyle \frac{10}{1}\times\frac{3}{4}=\frac{30}{4}$

$\displaystyle \frac{30}{4}=7\frac{2}{4}$ because $\displaystyle 4$ can go into $\displaystyle 30$ seven times, with $\displaystyle 2$ left over. 

$\displaystyle 7\frac{2}{4}$ is between the whole numbers $\displaystyle 7$ and $\displaystyle 8$. 

$\displaystyle \frac{7}{1}\times\frac{2}{4}=\frac{14}{4}$

$\displaystyle \frac{14}{4}=3\frac{2}{4}$ because $\displaystyle 4$ can go into $\displaystyle 14$ three times, with $\displaystyle 2$ left over. 

$\displaystyle 3\frac{2}{4}$ is between the whole numbers $\displaystyle 3$ and $\displaystyle 4$. 

$\displaystyle \frac{17}{1}\times\frac{1}{5}=\frac{17}{5}$

$\displaystyle \frac{17}{5}=3\frac{2}{5}$ because $\displaystyle 5$ can go into $\displaystyle 17$ three times, with $\displaystyle 2$ left over. 

$\displaystyle 3\frac{2}{5}$ is between the whole numbers $\displaystyle 3$ and $\displaystyle 4$. 

$\displaystyle \frac{6}{1}\times\frac{2}{5}=\frac{12}{5}$

$\displaystyle \frac{12}{5}=2\frac{2}{5}$ because $\displaystyle 5$ can go into $\displaystyle 12$ two times, with $\displaystyle 2$ left over. 

$\displaystyle 2\frac{2}{5}$ is between the whole numbers $\displaystyle 2$ and $\displaystyle 3$.