Post a New Question
posted by deja on Monday, December 1, 2008 at 10:18pm.
how can estimating help you add two- digit numbers?
If you round the numbers and then add them, you'll be estimating. Example: 27 + 51 is about 30 + 50. Since 3 + 5 = 8, then 30 + 50 is about 80.
More Related Questions