On weekends, my mother asked Jiaozi to improve her life for 1 a family of three. Dad ate all of jiaozi's 1 first, then the remaining 3% 1, and mom finally ate the remaining 2% 1. Please answer the following questions.

(1) How much did they eat in jiaozi?

( 1- 1/4)× 1/3= 1/4

A: They ate 1/4 continuously.

(2) How much jiaozi did Mom eat?

1/2× 1/2= 1/4

A: Mom ate 1/4.

(3) Has jiaozi finished eating? How much is left?

1- 1/4×3= 1/4

A: 1/4 remains.

2. A long problem

1 - 1/2- 1/4-……- 1/256= 1/256

Because notice that the former item is twice as much as the latter item, you can draw a conclusion directly.