My son has been set homework with half-completed fractions along a line of $30$. He has to complete the missing half.
For example, there is an indicator at the $10$th line and the fraction is half completed with a $1$ on the top half; therefore, he completes it with a $3$, making $\frac13$.
However, on the $13$th mark, there is a line with the number $2$ on the top half of the fraction. On my understanding, $13$ over $30$ is the lowest that the fraction can be reduced to. Why then is it calling for a $2$?
Can anyone help?