Question: Shelby had $20 to take to the book fair. She bought one book for $8 and another for $4. She decided to buy as many $4 posters as she could with the money she had left. How many posters can she buy?
Answer with step-by-step thinking: She spent $8 + $4 = $12 on books. She started with $20, so she has $20 - $12 = $8 left to spend on posters. Each poster costs $4, so she can buy $8 / $4 = 2 posters.
So the answer is 2.


Question: Uncle Bradley has a $1000 bill that he wants to change into smaller bills so he could give them to his nieces and nephews. He wants to change 3/10 of the money into $50 bills while the rest into $100 bills. How many pieces of bills will Uncle Bradley have in all?
Answer with step-by-step thinking: There will be $1000 x 3 / 10 = $300 worth of money that will be changed into $50 bills. Uncle Bradley will have $300 / $50 = 6 pieces of $50 bills. He will change $1000 - $300 = $700 worth of money into $100 bills. So there will be $700 / $100 = 7 pieces of $100 bills. Thus, there will be a total of 6 + 7 = 13 pieces of $50 and $100 bills in all.
So the answer is 13.


Question: It takes Jason 30 minutes to cut 1 lawn in his neighborhood. If he cuts 8 yards on both Saturday and Sunday, how many hours does he spend cutting grass?
Answer with step-by-step thinking:
He cuts 8 yards on both Saturday and Sunday so that’s 2 * 8 = 16 yards. It takes him 30 minutes to cut 1 yard so it takes him 30 * 16 = 480 minutes. There are 60 minutes in 1 hour and it takes him 480 minutes so that’s a total of 480 / 60 = 8 hours.
So the answer is 8.