Estimate 461 -- 7
460 - 6
To estimate 461 - 7, we can round each number to the nearest ten or hundred and then subtract.
Rounding 461 to the nearest ten gives us 460.
Rounding 7 to the nearest ten gives us 10.
Now, we can subtract 10 from 460:
460 - 10 = 450.
Therefore, an estimate of 461 - 7 is 450.