Play The Sims 3 on Mac with Intel HD 3000
That chipset is capable of running a hell of a lot more than The Sims, however you haven't stated your OS version, processor, or memory, but based on what MacBook systems have that graphics chipset, you shouldn't have any problems.

The minimum specs for the game are:


  Mac
  
  
  Mac OS X v10.5.7 or later
  Intel Core Duo processor
  2GB of RAM
  6.1GB of free hard-disk space minimum (with at least 1GB of additional space for custom content and saved games)
  128MB of VRAM
  ATI X1600 or Nvidia 7300 GT or Intel Integrated GMA X3100
  DVD drive
  
  
  Note: This game will not run on systems using PowerPC processors (G3/G4/G5) or the Intel GMA 950 class of integrated cards