91Ó°ÊÓ

Convert the numeral to a numeral in base ten. 67 eight

Add in the indicated base. $$ \begin{array}{r} 342_{\text {five }} \\ +413_{\text {five }} \\ \hline \end{array} $$

Add in the indicated base. $$ \begin{array}{r} 6784_{\text {nine }} \\ +7865_{\text {nine }} \\ \hline \end{array} $$

Write each Hindu-Arabic numeral in expanded form. 3070

Subtract in the indicated base. $$ \begin{array}{r} 462_{\text {eight }} \\ -177_{\text {eight }} \\ \hline \end{array} $$

Mentally convert each base ten numeral to a numeral in the given base. 9 to base five

Subtract in the indicated base. $$ \begin{array}{r} 1000_{\text {two }} \\ -\quad 101_{\text {two }} \\ \hline \end{array} $$

Mentally convert each base ten numeral to a numeral in the given base. 6 to base two

Write each Hindu-Arabic numeral as a Roman numeral. 43

Express each expanded form as a Hindu-Arabic numeral. \(\left(7 \times 10^{3}\right)+\left(0 \times 10^{2}\right)+\left(0 \times 10^{1}\right)+(2 \times 1)\)