Expanded Form of 405.9

Place Value Chart
	Hundreds	Tens	Ones		Tenths
405.9	4	0	5	.	9

Expanded Form of 405.9:
405.9 = (4 * 10²) + (5 * 10⁰) + (9 * 1/10¹)
405.9 = (4 * 100) + (5 * 1) + (9 * 1/10)
405.9 = 400 + 5 + 9/10

405.9 = 400 + 5 + 0.9

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