Easy Puzzles 

Workings

Hint
Try reading the words backwards.

Answer
yenkom.

Reasoning
The others are the names of animals spelled backwards:

   hare, deer, rabbit, cat, marmoset, pig.

But YENKOM is not quite the reverse of MONKEY.

Workings

Hint
There are quite a few anagrams, one of which is LEAST.

Answer
Least, slate, stale, steal, tales, teals.

Remember that the question asked for common words.

Workings

Hint
The answer is in the question.

Answer
Edam.

MADE backwards!

Workings

Hint
The answer is in the words given.

Answer
Slow.

Reasoning
Take the third letter of the first word
   + the second letter of the second word
      + plus the first letter of the first word
         + plus the fourth letter of the second word.

Double-Checking
3-1- [1234] -2-4
s-f- [fast] -a-t
o-s- [slow] -l-w