Two steps is where order starts to matter. These free printable worksheets take real formulas such as P = 2l + 2w and A = ½bh and ask for a letter that is two operations away, with the working printed on the answer key.
If they get stuck
The answer key prints on a separate page.
Rearranging P = 2l + 2w for l means undoing what was done to l in the opposite order. It was multiplied by 2 and then had 2w added, so 2w comes off first and the 2 goes second. Students who divide first are not wrong, but they then have to divide every term, and that is where the mistakes come from. The key shows P − 2w = 2l, and then (P − 2w)/2 = l.
A fraction in front is its own kind of two steps. In A = ½bh the student has to double both sides to get rid of the half, and then divide by the other letter. The Fahrenheit formula takes the 32 off first and only then deals with the fraction. These are formulas from real courses, and a student who has done them will recognize them in science later on.
Solve A = ½pq for p