Standard form of 30 is 3.0 × 101
The way you wrote it is the standard form.
It is: 0.30 = 3.0*10^-1 in standard form
2 thousand 4 hundred 30 (2,430) in standard form is 2.43 × 103
3000
1,000,500,303 is the standard form.
30 + 7 = 37
300000 40000 6000 700 30 5 in standard form is 346,735
The answer is 20 and they are: 1,2,3,4,5,6,7,8,9,10,20,30,40,50,60,70,8… and 200 The reason is the expanded form of lets say 11 is 10+1 in which case it is not identical to its standard form. Numbers such as 30 is only 30 and is identical to its standard form.
30+8+4
3000
30,000,000
100+30+5