Sophia went shopping for school supplies. She bought a notebook for $3.50, a pack of pens for $2.75, and a pencil case for $5.25. How much did Sophia spend in total?
3.50 + 2.75 + 5.25 = 11.50
Sarah went to the store with $20.50. She bought a book for $7.75. How much money does she have left?
20.50 - 7.75 = 12.75
Alex is buying two books for school. The first book costs $12.85, and the second book costs $9.50. If Alex pays with a $25 bill, how much change will he receive?
25 - 12.85 + 9.50 = 2.65
David buys 3.6 pounds of apples for $2.50 per pound. How much will he pay for the apples?
2.5 x 3.6 = 9
A 5.5-pound bag of dog food costs $22. How much does each pound of dog food cost?
22 divided by 5.5 = 4