What is 670200640 in expanded form?

Answer 1

Either of these forms is fine:

1. (6 x 100000000) + (7 x 10000000) + (0 x 1000000) + (2 x 100000) + (0 x 10000) + (0 x 1000) + (6 x 100) + (4 x 10) + (0 x 1).
2. (6 x 108) + (7 x 107) + (0 x 106) + (2 x 105) + (0 x 104) + (0 x 103) + (6 x 102) + (4 x 101) + (0 x 100).