Posted by jasmin on Tuesday, October 6, 2009 at 11:51am.
how knowing the number of pennies in one jar can help you estimate the number of pennies in a second jar that is four times as large. give me an example.

math  bobpursley, Tuesday, October 6, 2009 at 11:52am
4500 pennies are in a pint...how many are in a half gallon (4pints).
ans: 4*4500

math  Ms. Sue, Tuesday, October 6, 2009 at 11:53am
If there are 100 pennies in one jar, there must be about 400 pennies in a jar that is four times as large.
Do you see how I got 400?
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