How did they figure these tips?
Number Sense Math and Social Studies Math and Food
  Act I:  This restaurant bill has the suggested tips, but they are smudged out.  What should they be?  Consider having students make a fast 5 to 10 -second prediction in th...
Data and Probability percents 6.RP.3 7.RP.3 6th 7th 8th sale tips tipping 3-act