Posted by GamerGuy on Tuesday, September 18, 2012 at 6:19pm.
Use rounding to estimate the product 12*9. Then, use compensation to find the actual answer. If Alison was rounding to find how much 12 books that were $9 apiece cost, would she get a good estimate? Explain.

math  Ms. Sue, Tuesday, September 18, 2012 at 6:28pm
12 * 10 = 120

math  GamerGuy, Tuesday, September 18, 2012 at 6:34pm
Can you please explain why this is your answer?

math  Ms. Sue, Tuesday, September 18, 2012 at 6:44pm
I estimated by rounding 9 up to 10.
12 * 10 = 120
12 * 9 = 108 
math  adrianna, Wednesday, October 7, 2015 at 2:36pm
8267 2761