Eliza savage received a statement from her bank showing a checking account balance of $324.18 as of january 18. her own checkbook shows a balance of $487.38 as of january 29. the bank returned all of the cancelled checks but three. the amounts of these three checks are $15.00, $77.49, and $124.28. how much did eliza deposit in her account between january 18 and january 29?
a. $201.12
b. $54.44
c. $197.24
d. $379.97

Since she did not get those checks back yet, we should subtract them from her account because the bank eventually will when they are processed.
15 +77.49 + 124.28 =216.77 - total of the checks not yet processed.

 $324.18 - 216.77 =$107.41 which would be her balance once the three checks are processed.   However, she reports that she has  $487.38 so the difference is what she deposited.  $487.38 - 107.41 = $379.97 - answer d. 

The first digit is in the middle school 100s place