2007-01-03 14:42:02 · 2 answers · asked by gohomeyelow 1 in Science & Mathematics ➔ Mathematics
Regrouping is a method that is used when vertically subtracting two numbers in which the following situation arises:
83
-75
-------
As you can see, 3 is less than 5 so subtracting is not really possible to do, straightforwardly. Regrouping is needed. You "borrow" a ten from the 80 ( the 8 actually represents eighty) and you get "70 and 13". Now, you can subtract five from thirteen. The answer is 8. However, in the tens column, we now have only a 7 (seventy). Seven minus seven is zero. The answer it 8. That's regrouping.
2007-01-03 14:47:31 · answer #1 · answered by Lucan 3 · 0⤊ 0⤋
Gather together the like terms first, and then perform subtraction as indicated.
Do have a particular problem to solve?
2007-01-03 22:45:21 · answer #2 · answered by Jerry P 6 · 0⤊ 0⤋