Standard practice
Percent is a comparison with 100.
Noor shades 30 squares of a hundred-square grid at the school store.
Percent is a comparison with 100. On a complete hundred grid, the shaded count and the percent are the same number for different reasons: one is a count of squares, the other is a rate per hundred.
Problem 1 of 9. Activate, study a model, try guided items, work independently, apply, and reflect.