The average toothbrush contains about 2,5000 bristles grouped into about 40 tufts per toothbrush. Approximately, how many bristles are in each tuft?
Send answers to kellys3ps@sbcglobal.net
Parents may help, but try to let your child figure it out on their own.Weekly winner wins a Smencil. Monthly winner wins a $20 Barnes and Noble gift certificate!
Good Luck!
Kelly
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