dora reaches her goal of $ 400 in savings.she decide to set a new goal of $900.how many $100 bills will she need to reach $900 in savings? explain your answer using words pictures or numbers
She will need 5 $100 dollar bills, because she has in total $400 and wants $900, $900-$400= $500, $500= 5 $100 dollar bills. So the answer is Dora will need 5 $100 dollar bills.