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1.2000 × 10^4
12000, exactly as in the question!
Twelve thousand.
5,000
A 12000 sqft home would probaly use more than 1 unit.
12000
12000
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.
It can be rounded to 9 units.
12,000 is twelve thousand.
X mm
Exactly as in the question