|I. The first decimal-to-fraction conversion exercise in the 4th grade Singapore Math Primary Mathematics 4B workbook, p. 32 [click to enlarge]:|
|II. From a similar point in the 4th grade Investigations curriculum, where "you may use your calculator" [click to enlarge]:|
|III. Extra Credit|
What fraction of Investigations vs. Singapore Math students will need to bring calculators to restaurants?