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Worksheet Worksheet 1
1.
Find the least common multiple of 12 and 28 by writing out multiples of each number and also by applying the technique from this section.
2.
Find the least common multiple of 18 and 48 by writing out multiples of each number and also by applying the technique from this section.
3.
Calculate \(\frac{3}{5} + \frac{7}{8}\text{.}\)
4.
Check the presentation for errors. If you find one, circle it and describe the mistake in words.
\begin{equation*}
\begin{aligned}
\frac{4}{5} + \frac{3}{7} \amp = \frac{4}{5} \cdot 7 + \frac{3}{7} \cdot 5 \amp \amp \text{Common denominator} \\
\amp = \frac{28}{35} + \frac{15}{35} \\
\amp = \frac{43}{35}
\end{aligned}
\end{equation*}
