900,000,000,000 in standard form is written as 9 x 10^11. This is because the decimal point is moved 11 places to the left to make the number between 1 and 10, and the exponent indicates how many places the decimal point was moved.
The standard form is 41,800,000
3,400,000.
200,000,000,000
75
Five hundredths in standard form is 5.0 × 10-2
The standard form is 41,800,000
21.59 in standard form is 2.159 × 101
3,400,000.
75
60,000
200,000,000,000
0.012
165,000,000
4,600,000
0.006
100,000,000,000,000
Writing a number in standard form simply means to express the number in its 'normal' form. Therefore, your example is written in standard form.