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Murdiyani, Nila Mareta; Zulkardi; Putri, Ratu Ilma Indra; van Eerde, Dolly; van Galen, Frans – Indonesian Mathematical Society Journal on Mathematics Education, 2013
Subtraction has two meanings and each meaning leads to the different strategies. The meaning of "taking away something" suggests a direct subtraction, while the meaning of "determining the difference between two numbers" is more likely to be modeled as indirect addition. Many prior researches found that the second meaning and…
Descriptors: Subtraction, Mathematical Models, Mathematical Formulas, Problem Solving