This resource includes 44 single and multi-step word problems using whole numbers and decimals. The problems vary in difficulty and really require students to be detectives in thinking about and analyzing word problems.
Cards #1-16 addition and subtraction only
Cards #17-32 all 4 operations
Cards #33-44 measurement, including conversions
There are 4 different variations of the task cards: color with and without QR codes and BW with and without QR codes.
There are also 4 math mystery pages that can be used along with the cards. Each page has a math riddle that can be solved by scanning QR codes attached to task cards allowing your detectives to solve a mystery as they work through the multi-step problems.
I've provided a couple different options for recording sheets in case you don't want to use all 44 cards at one time. This allows you to use the cards in a way that works best for you and your class.
You can play this up as much as you want (disguises, magnifying glasses, footprints, caution tape), or simply use them as task cards at a station.