A whole divided into four equal parts has four fourths, with each part representing one fourth (¼); all four parts together make exactly one whole, represented as 4/4 = 1. This understanding applies to area and length models and distinguishes fourths from four unequal pieces, establishing the foundation for comparing, composing, and interpreting fractions.
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A fourth is one of 4 equal parts of a whole.
Imagine a rectangle divided into 4 equal parts:
So, four fourths equal one whole. The parts must be equal; four unequal pieces do not make four fourths.
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