Rounding Numbers
Here's a couple of poems to help you remember how to round!
Math Rounding by Monica Yuskaitis
Find your number
Look right next door
4 or less just ignore
5 or more, add 1 more
One more step will make you a hero
Change the rest of the numbers to zero!
Math Rounding by Monica Yuskaitis
Find your number
Look right next door
4 or less just ignore
5 or more, add 1 more
One more step will make you a hero
Change the rest of the numbers to zero!
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PBS Kids Counting Large Numbers
In this video segment from Cyberchase, Bianca has volunteered to help count the number of runners participating in the New York City Marathon. She must keep track of the runners as they pass a certain checkpoint on the course. There are at least 30,000 runners, so she has to develop a good strategy for counting such a large number of people. She tests out a few options, but finds that an abacus may be her best tool.
PBS Kids Number Sense
The challenge is to make a number larger than the one on Hacker's machine. Can you do it?
E-Lab Place Value to 100 000
What You Will Do: You will use a place-value chart to find the value of each digit in a number. How You Will Use It: You will discover that the value of a digit depends on its place in the number.
You will need to print a recording sheet to do this activity.
You will need to print a recording sheet to do this activity.
http://www.mrnussbaum.com/placevaluepirates2.htm - without decimals
http://www.mrnussbaum.com/placevaluepirates1.htm - with decimals
http://www.mrnussbaum.com/placevaluepirates1.htm - with decimals