Answer
In expanded form, 3470 is 3000 + 400 + 70 + 0 .
Work Step by Step
Look at the digits places of the number. Since there are 4 places and the first number is 3 write 3000. Then, the number in the hundreds place is 4. The number in the tens place is 7. Finally, the number in the ones place is 0, so the answer is 3000 + 400 + 70 + 0 .