Answer:
Hi, the correct way to write 507,021 in expanded form is,
507,021.
Expanded forms can be written like a sentence or stacked for readability as they are here.
Expanded Notation Form:
500,000 + 0 + 7,000 + 0 + 20 + 1.
Expanded Factors Form:
5 × 100,000 + 0 × 10,000 + 7 × 1,000 + 0 × 100 + 2 × 10 + 1 × 1.
Expanded Exponential Form:
5 × 105 + 0 × 104 + 7 × 103 + 0 × 102 + 2 × 101 + 1 × 100.
Word Form:
Five hundred seven thousand, twenty-one.
Explanation: