Molly Gilbert is the owner of a small apple orchard in South Jersey. She has 19 rows of trees with 12 trees in each row. Last year the average production per tree was 761.3 apples. For this problem, an exact computation is certain to be wrong and will also be a number that is very hard to remember or use in further planning. Determine the reasonableness of an answer by estimating the result of operations.
Students estimate the size of a crowd at a rock concert from a picture.
They share all of their various strategies with the rest of the class. Students demonstrate their understanding by estimating whether or not they can buy a set of items with a given amount of money. Students place decimal points in multi-digit numbers to make absurd statements more reasonable. Develop, apply, and explain a variety of different estimation strategies in problem situations involving quantities and measurement. Students develop the concept of a billion by estimating its size relative to one hundred thousand, one million, and so on.