Jade is building a lego tower. She has 100 pieces. Each level has to be 7 pieces wide. If she has 23 pieces left at the end, how many levels is her tower?
Thoughts? Step-by-step reasoning:
She used 77 legos because 100 - 23 = 77. She made 11 levels because 77 / 7 = 11.
Thus, the answer is 11.