Question

Explain how you would use front-end estimation to subtract 189 from 643.

Answer 1

640 - 190 = ?

http://www.aaamath.com/est73ax3.htm

http://www.basic-mathematics.com/front-end-estimation.html

Answer 2

how you would use front-end estimation to subtract 189 from 643 explain

Answer 3

i think it would be 990 or 1,000

Answer 4

estimate to sutract 189 from 643