How many 40 cm piece of string 100 meters?

To find out how many 40 cm pieces of string can be cut from 100 meters, first convert 100 meters to centimeters: 100 meters equals 10,000 centimeters. Then, divide 10,000 cm by 40 cm:

10,000 cm ÷ 40 cm = 250.

Therefore, you can cut 250 pieces of 40 cm string from 100 meters.