I don't
59,362
5308
8000309
The sum is 90,005,000,300 (ninety billion, five million, three hundred).
200000+50000+9000+300+40+1
59,362
313
No
508,310
5308
356.2
8000309
=99 050 301
25070304
300 millionths in standard form is 3.0 × 10-8
standard numeral of 300 000+300+1+50+3 000
Add them up: 5 + 300 + 8 = 513 I suspect that you may have a zero missing: either: 50 + 300 + 8 = 358 or: 5 + 300 + 80 = 385 Expanded form is usually written with the biggest number first and the rest in decreasing value, ie 358 = 300 + 50 + 8 385 = 300 + 80 + 5