Use the sliders to build decimal numbers up to the thousandths place. Observe how each digit represents a different place value and how the expanded form reveals the contribution of each place.[br][br][size=85]Note: This app was createad by GeoGebra Content Team.[/size]
Reflect on the following questions to deepen your understanding of decimal place value and expanded form.
What decimal number is represented by [math]\left(7\times10^2\right)+\left(5\times10^{-1}\right)+\left(9\times10^{-2}\right)[/math]?
What decimal number is equivalent to [math]\left(3\times1\right)+\left(4\times\frac{1}{100}\right)+\left(6\times10\right)[/math]?
Suppose one digit is moved one place to the left. What happens to its value?