a square times n to the 3rd power
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Expanded notation is when you write a number to show each digit's value. For example, you would write 5329 as 5000+300+20+9.
Expanded Notation of 60 = (6 x 10) + (0 x 1).
Expanded Notation of 20 = (2 x 10) + (0 x 1)
7.5 in expanded notation: 7.5 = (7 x 1) + (5/10)
Expanded Notation of 37 = (3 x 10) + (7 x 1).