(8) 54 times 6 (9) 73 times 7 (10) 89 times 8 (II) 95 times 9

Vamos corrigir e detalhar os cálculos:<br /><br />(8)<br />\[ 54 \times 6 \]<br />\[ 54 \]<br />\[ \times \quad 6 \]<br />\[ \hline \]<br />\[ 324 \]<br /><br />(9)<br />\[ 73 \times 7 \]<br />\[ 73 \]<br />\[ \times \quad 7 \]<br />\[ \hline \]<br />\[ 511 \]<br /><br />(10)<br />\[ 89 \times 8 \]<br />\[ 89 \]<br />\[ \times \quad 8 \]<br />\[ \hline \]<br />\[ 712 \]<br /><br />(11)<br />\[ 95 \times 9 \]<br />\[ 95 \]<br />\[ \times \quad 9 \]<br />\[ \hline \]<br />\[ 855 \]<br /><br />Portanto, as respostas corretas são:<br />(8) 324<br />(9) 511<br />(10) 712<br />(11) 855