To convert 1230 to a decimal using long division, we need to determine what 1230 divided by 1000 equals, since converting a whole number to a decimal typically involves moving the decimal point to the left.
Here's how the long division works:
- Divide 1230 by 1000.
- How many times does 1000 fit into 1230? It fits 1 time.
- Multiply 1 by 1000 to get 1000.
- Subtract 1000 from 1230 to get a remainder of 230.
- Now, since we're looking for a decimal, we'll append a decimal point and zeroes to 230.
- Divide 2300 by 1000. It fits 2 times.
- Multiply 2 by 1000 to get 2000.
- Subtract 2000 from 2300 to get a remainder of 300.
- Append a zero again. Now you have 3000.
- Divide 3000 by 1000. It fits 3 times.
- Multiply 3 by 1000 to get 3000.
- Subtract to get a remainder of 0.
So, when you complete the division:
1230 รท 1000 = 1.230 = 1.23 (as a decimal).
If we are assuming the question is simply asking for decimal conversion from integer 1230 without dividing by 1000, the decimal representation would be:
1230.0, but since none of the answers seem to relate to dividing by 1000, we can analyze the provided response options.
None of the choices (2.5, 4, 12.3, 0.4) are correct derivatives from dividing 1230 by 1000, as 1.23 is what we found.
If the focus is merely converting 1230 to a decimal point with a placeholder, the answer you'd use would simply be 1230.0.
If you had intended to divide 1230 by another number (like 490) that would lead to one of the given responses, please clarify.