Quick Notes

5 640 men and 3 290 women participated in the Merdeka Day poster drawing competition. However, 1 230 of the participants were ill and could not attend the day of the competition. So, how many contestants competed during the event day?

Mathematical sentence: \(5\,640\space+\space3\,290\space-\space1\,230=\space\underline{\quad\quad}\)

METHOD 1:

\(\begin{array} {rr} \space\space\small{\color{green}{1}}\space\space\space \quad \\5\,\space\space6\space4\space0 \\+\quad\space3\,\space\space2\space9\space0 \\\hline\space8\,\space\space9\space3\space0 \\-\quad\space1\,\space\space2\space3\space0 \\\hline\space7\,\space\space7\space0\space0 \\\hline \end{array}\)

METHOD 2: 

\(\begin{array} {rr} \space\space\small{\color{green}{1}}\space\space\space \quad \\5\,\space\space6\space4\space0 \\+\quad\space3\,\space\space2\space9\space0 \\\hline\space8\,\space\space9\space3\space0 \\\hline \end{array}\)             \(\begin{array} {rr} \quad \\8\,\space\space9\space3\space0 \\-\quad\space1\,\space\space2\space3\space0 \\\hline\space7\,\space\space7\space0\space0 \\\hline \end{array}\)