1, the first half is 0.5m, the second half is 0.5m, that is, 0.5*0.5 is the quadratic of 0.5, and the second half is 0.5*0.5*0.5 is the cubic of 0.5. . . . . Seven is the seventh power of 0.5, that is, 0.0078 125m.

2. For the first time, pinch both ends of a thick noodle, and then stretch both ends to get a noodle. The second time we get two faces, and the third time we get four faces, that is, the quadratic of 2, the cubic of 2 is 1000, and the cubic of 2 is 1024, that is, at least 165438+.

3. The first truncation is 0.5m2, the second truncation is half of 0.5m2, that is, 0.5*0.5 is the quadratic of 0.5, and the third truncation is the cubic of 0.5, so the eighth truncation is the eighth power of 0.5, that is, 0.00390625m2.