Posted by Kim on Wednesday, January 21, 2009 at 9:46pm.
Mr. Cline needs 36 ice cubes for the science experiment. Eack ice tray makes 12 ice cubes. If he makes 4 ice trays, does he have enough ice cubes? Can you use an estimate to solve? Explain.

math  Reiny, Wednesday, January 21, 2009 at 9:49pm
what is 12 x 4 ?
as an estimate what is 10 x 4 ?
(suppose each tray has only 10 cubes)