To find the total number of arms that 7 sea stars have, multiply the number of sea stars by the typical number of arms per sea star. In this case, 7 sea stars with 5 arms each results in 35 arms in total.
The student is asked to determine how many arms all the observed sea stars have in total.
Since it is known that sea stars typically have five arms each, the calculation needed is to multiply the number of sea stars by the number of arms per sea star.
For example, if Max saw 7 sea stars, we would calculate the total number of arms as follows:
Multiply the number of sea stars by the number of arms per sea star.
7 sea stars × 5 arms per sea star = 35 arms in total.
Therefore, the 7 sea stars Max saw would have a total of 35 arms altogether.