640 - 190 = 450
explain how you would estimate to subtrac 189 from 643
400
400
189 rounded up to the nearest 100 number would be 200; 200 subtracted from 643 = 443 , 200 - 189 454
1 and 2/189
The factors of 189 are 1, 3, 7, 9, 21, 27, 63 and 189. None of them have a difference of 7. I suppose you could do 9 - 1 - 1, but that seems a little unfair.
Take your birthday, subtract 73 months, and add 189 days.
Today is Monday, May 19, 2014. If you subtract 27 weeks from today's date, or 189 days, the date would be Monday, November 11, 2013.
half would be around 94.
189% as a fraction would be 189/100. The factors of 189 are 1, 3, 7, 9, 21, 27, 63, and 189. None of these numbers can be divided into 100 equally.
189
Oh, dude, front end estimation is like when you round numbers to make math easier, right? So, if you wanna subtract 189 from 643 using front end estimation, you could round 643 to 600 and 189 to 200, then subtract 200 from 600 to get 400. But like, who needs estimation when you can just do the actual math, am I right?