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How do estimation & place value play into long division by a 2-digit #?
Give an explanation that shows the use of estimation and place value in the course of
carrying out long division by a 2-digit number. I read my textbook for an explanation, but I couldn't find anything direct. PLEASE HELP!!!
2 Answers
- 8 years agoFavorite Answer
If I'm interpreting the question correctly you should put, "estimation allows us to come up with a number that we can compare to the answer obtained by long division. If the answer has more or less digits than the estimation then there is probably an error"
Source(s): I'm a math nerd - NorebalLv 78 years ago
If we divide by a 2 digit number, the first digit will be in the tens column.For example:
............. 6
......---------------- ... We pick 7 in the quotient to do the estimation.
73 |. 4.3,9.2.5..... 4 in the quotient is too small to divide by 7. We pick 43.
....... 4 2 ............ 43 divided by 7 is 6 . In what column do we place the 6 ?
.......------ ........... Since the 3 ( from the 43 ) in the thousands column. Thousands divided by ten.......... ..........................gives hundreds. The 6 goes in the hundreds column in the quotient.
