Broderick had $420 in his checking account. he made 6 deposits of $35.50 each. he needs to write 4 checks for $310.75 each. how much money does boderick need to add to his account to cover his checks ? show your work.

So, first you would need to multiply 6 by $35.50, then take that number and add it to the $420 to get $633.00. Then you need to multiply $310.75 by 4. After take that $1243.00 and subtract $633.00 from it to get $610.00. So, the answer is: Broderick would need to add at least $610 to his account to cover his checks.