Answer
Counting by weighing is a method used for counting large quantities of something that has an average mass.
For example, if you have to count 100 marbles, you just have to follow these steps:
1. Calculate the average mass of a marble. Use a scale, and measure the weight of some marbles.
2. Divide the total mass by the number of marbles used, resulting in the average mass.
Work Step by Step
See other examples and the concept of counting by weighing in Section 5-1.
