43.5 = (4 * 101) + (3 * 100) + (5 * 1/101)
43.5 = (4 * 10) + (3 * 1) + (5 * 1/10)
43.5 = 40 + 3 + 5/10
43.5 = 40 + 3 + 0.5
Expanded Form of 43.5
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