It can be rounded to 9 units.
X mm
Exactly as in the question
600
how do I write 3,000+70+9 in standard form
1.2000 × 10^4
12000, exactly as in the question!
1.2E4 edit: 12000 is already in decimal form
To write 12000 in standard form, you need to express it as a number between 1 and 10 multiplied by a power of 10. In this case, 12000 can be written as 1.2 x 10^4 in standard form. This is because you move the decimal point to the left until there is only one non-zero digit to the left of the decimal point, and then count the number of places you moved the decimal to determine the exponent on 10.
Twelve thousand.
5,000
A 12000 sqft home would probaly use more than 1 unit.
12000
12000
It can be rounded to 9 units.
2.0012
12,000 is twelve thousand.