2. Chapter 1.1 CONCEPT: How to use a problem solving plan.

3. Jamie has $35 dollars in her savings account. She deposited $25 on Monday and $7 on Wednesday. On Friday she withdrew $35 to buy a new bike helmet. How much did she have left in her savings account? Understand the problemUnderstand the problem You need to find out how much money Jamie had left in her account after her deposits and withdrawal.

4. Jamie has $35 dollars in her savings account. She deposited $25 on Monday and $7 on Wednesday. On Friday she withdrew $35 to buy a new bike helmet. How much did she have left in her savings account? Make a plan You need to add the amounts of the deposit to the original savings account balance, and then subtract the cost of the bike helmet.

5. Jamie has $35 dollars in her savings account. She deposited $25 on Monday and $7 on Wednesday. On Friday she withdrew $35 to buy a new bike helmet. How much did she have left in her savings account? Solve the ProblemSolve the Problem $35 original balance 25 Monday’s deposit + 7 Wednesday’s deposit $67 $67 savings account balance -35 cost of the bike helmet $32 amount left in her savings account

6. Jamie has $35 dollars in her savings account. She deposited $25 on Monday and $7 on Wednesday. On Friday she withdrew $35 to buy a new bike helmet. How much did she have left in her savings account? Look BackLook Back Check that your answer is reasonable. Estimate to check your results. The account balance was about $70. The helmet was $35. 70 - 35 = 35 Is $32 left reasonable? Yes!

7. Each cafeteria table seats 8 students. Each table costs $78. If there are 112 students eating lunch, how many tables are being used? Understand the problemUnderstand the problem Make a planMake a plan Solve the ProblemSolve the Problem Look BackLook Back The problem asks you to find how many tables are needed for 112 students. The cost of the tables is irrelevant. Divide the total number of students by the number of students who can sit at each table. 112 ÷ 8 = 14 tables Use mental math. 110 ÷ 10 = 11