80 + 500 + 2 = 582
300,000 + 70,000 + 500 + 70 + 3 = 370,573
5000 + 500 + 3 = 5503
Standard form is the sum of all the numbers in the expanded form. Using the example, the standard form for the expansion of that number would be 371,510.
The way you wrote it is the standard form.
The standard form is 7,000,500
730520
The answer is 700,040,566. That other form is not much good to express numbers with, its soul purpose being to show place value.
23505
500,000,000,973
1,000,500,303 is the standard form.
559 in standard form: 5.59 × 102
3,530.053