This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
You can estimate to find out "about how many" when subtracting as well as when adding.  This is also called rounding.You can estimate the differences of two-digit and three-digit numbers.Look at the examples below. 77Rounds to8031Rounds to-  3050 The estimated difference of 77 - 31 is 50. 459Rounds to500287Rounds to-  300200 The estimated difference of 495 - 287 is 200.