Why am I getting wrong compounding and discounting answers?

I am an accounting and finance student, so on my casio fx 82ms I'm getting wrong answers on compounding and discounting. What might be the issue?

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0