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Place-value understanding in number line estimation predicts future arithmetic performance

Dietrich, Julia F. ; Huber, Stefan ; Dackermann, Tanja ; Moeller, Korbinian ; Fischer, Ursula


In multi-digit numbers, the value of each digit is determined by its position within the digit string. Children's understanding of this place-value structure constitutes a building block for later arithmetic skills. We investigated whether a number line estimation task can provide an assessment of place-value understanding in first grade. We hypothesized that estimating the position of two-digit ...


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