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?