Scott had $15 in his wallet. He spent $8 for a toy. He earned $5 for doing a chore. He spent $3 for lunch. How much money did Scott have left?

A bag contains 20 marbles. 7 are red, 5 are blue, 2 are yellow, and the rest are green. How many green marbles are in the bag?

Angela opens a saving account with $12. She then deposits $5. She withdraws $9 and then later deposits $6. How much does Angela have in the account then?

Anthony has saved $8. He gets $4 more for his allowance. He spends $3 for a toy. He gets another allowance of $4. How much money does Anthony need to buy a $20 robot?

Ben walks from school to Danny’s house which is 6 blocks east of the school. Ben then walks 11 blocks west to his own house. How many blocks away does Ben live from school?