Answer :

All the place values of 12, 354.897 are as follows: 12 thousands, 3 hundred, 5 tens, 4 ones, 0.8 tenths .09 hundredths, .007 thousandths.

The correct answer is:

1 is in the ten-thousands place; 2 in the thousands place; 3 in the hundreds place; 5 in the tens place; 4 in the ones place; 8 in the tenths place; 9 in the hundredths place; and 7 in the thousandths place.

Explanation:

Starting with the digit to the left of the decimal, we have the ones place. The place to the left of that is the tens place; to the left of that, the hundreds; to the left of that, the thousands; and to the left of that, the ten-thousands.

Back to the ones place, the place to the right of that is the tenths place; to the right of that the hundredths place; to the right of that, the thousandths place; and to the right of that, the ten-thousandths place.