SOLUTION: this is pre-algerbra I couldnt find it on here but it's front-end estimation here we go question # 1: 1) 345 + 682

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Question 248445: this is pre-algerbra I couldnt find it on here but it's front-end estimation
here we go
question # 1:
1) 345 + 682
Found 2 solutions by Alan3354, richwmiller:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
345
682
----- Add
1027
----------
I don't know what's supposed to be estimated.

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
340+ 680=1020
Estimating by Front End Estimation
Front end estimation mostly produces a closer estimate of sums or differences than the answer produced by adding or subtracting rounded numbers.
How to estimate a sum by front end estimation:
* Add the digits of the two highest place values
* Insert zeros for the other place values

* Example 1: 4496 + 3745 is estimated to be 8100 by front end estimation (i.e. 4400 + 3700).
* Example 2: 4496 + 745 is estimated to be 5100 by front end estimation (i.e. 4400 + 700).