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[quote=Anonymous][quote=Anonymous]
 :roll: Anyone with an iota of math sense would understand that to get an accurate estimate for 3.5+4.5, you'd need to round one of them up and one of them down.  Anyway, that's beside the point.  The entire point of estimating is to get a quick ballpark figure when it would otherwise be more onerous to do the full computation.  Asking kids to estimate things that they can instantly solve in their heads is an abuse of the entire concept of estimation.  It's also absurd to ask them to completely throw common sense out the window and instead follow rigid rules.  It's beyond dumb to say that 3.4 + 3.6 estimates to 7, but 3.5+3.5 estimates to 8, especially since the smart kids would instantly understand that both equal 7.

[b]I know that the teachers don't have much choice in what they teach and how they teach it.[/b]  The problem is that the FCPS math program of studies really abuses the entire concept of estimation.  OP, you'll just have to teach your kids to blindly follow the algorithm that the teacher wants for estimation. [/quote]

That's funny.  The biggest complaint is that teachers don't have a standard curriculum but just make it all up using bad TPT worksheets.  Now they don't have choice in what or how to teach?[/quote]

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