Joy sang 7 songs. Jim sang 5 fewer songs than Joy.  How many songs did Jim sing?

There were 10 butterflies in basket. 7 flew away. How many butterflies are left?

There were 7 lollipops. 4 fell on the ground. How many lollipops were there in total?

Tanny had 9 boxes of cookies. Then she sold 2 boxes of cookies. How
many boxes of cookies are left?

Jack had 3 apples and ate 1 apple. How many apples are left?