3 + 2 = 1
A mathematical statement most grades K–2 students would disqualify as being an equation, thus revealing their partial understanding of the meaning of an equals sign, which has different meanings.
What percentage of elementary math students (and their teachers and parents) would claim that statements like 1 + 3 = 2, 3 + 2 = 1, and 2 × 3 = 1 aren’t equations, because the sum or product is incorrect?
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