Lesson 3-5 Example Solve. MONEY Monique made $368 babysitting last month. She put $345 in the bank and kept the rest for spending money. How much spending money does she have? UnderstandRead the problem. Write what you know. Monique made $368 last month. She put $345 in the bank.

Lesson 3-5 Example PlanPick a strategy. One strategy is to work backward. You know the total amount. Start with that number.

Lesson 3-5 Example SolveWrite an expression to show subtraction. 368 – 345 Write the subtraction in vertical form. 368 − Monique will have $23 for spending money.

Lesson 3-5 Example CheckAdd the amount for her spending money and the amount she saved. They should equal the total amount she made last month