Eric had $401. He spent $79 on his Wii game.
How mnuch did he have left? Use mental math to solve .
$320
$330
$322
$420
Answer key
Sphere
Sphere, cylinder, and Cone to one group
Rectangular prism and cube to another group
Reason:
1st group: can roll, have curves
2nd group: flat surfaces, no curves, has corners