Question: Shelly has ten $10 bills and four fewer $5 bills. How much money does Shelly have in all?
Answer with step-by-step thinking: Shelly's ten $10 bills amount to 10 x $10 = $100. She has 10 - 4 = 6 $5 bills. The 6 $5 bills amount to 6 x $5 = $30. Thus, Shelly has $100 + $30 = $130 in all.
So the answer is 130.

Question: There are 400 students in a local high school. 50 percent are freshmen or sophomores. 1/5 of freshmen and sophomores own a pet. How many freshmen and sophomores do not own a pet?
Answer with step-by-step thinking: Freshman / Sophomores:400(.50) = 200 students. Have pets:200 / 5 = 40 students. 200 - 40 = 160 do not have pets.
So the answer is 160.

Question: Bekah had to read 408 pages for history class. She read 113 pages over the weekend and has 5 days left to finish her reading. How many pages will she need to read each day for 5 days to complete her assignment?
Answer with step-by-step thinking:
Pages left to read: 408 - 113 = 295 pages. 295 / 5 = 59 pages. Bekah needs to read 59 pages each day.
So the answer is 59.