### Home > CC1 > Chapter 2 > Lesson 2.3.2 > Problem 2-67

2-67.

Jenny has been saving her babysitting money for a class field trip to Washington, D.C. She wants to save $200.00 over three months. She saved $53.00 the first month and $67.00 the second month. Homework Help ✎

*Estimate*(without calculating) the amount that Jenny needs to earn during the third month to meet her goal.Rounding makes numbers easier to add.

Now show how Jenny could

*calculate*the amount of money she needs to earn.How much money does Jenny already have?

Add what Jenny has saved in her first and second months.

$53.00 + $67.00 = $120.00If she needs $200.00 and has $120.00, how much more money does Jenny need? Subtraction will help..