For my math problem seven tenths exceeds seven thousandths by what number would I subtract seven tenths from seven thousandths (0.7- 0.007) or subtract seven thousandths from seven tenths. (0.007-0.7)

you have it backward

"subtract seven tenths from seven thousandths" means (0.007- 0.7)

"subtract seven thousandths from seven tenths" means (0.7-0.007)