I. One of the last percentage problem sets in the 6th grade Everyday Math Student Math Journal, Volume 1, p. 157 [click to enlarge]:
II. One of the last percentage problem sets in the 6th grade Singapore Math Primary Mathematics Workbook 6A (volume 1), pp. 64-65 [click to enlarge]:
III. Extra Credit
Contrast the number of steps needed to solve the Everyday Math problems vs. the Singapore Math problems.
Which students are more likely to be able to solve the other students' problem set: the Everyday Math students, or the Singapore Math students?