I. 1. straight line

2.2

3.75

4.3 8

5. 160

6. Right angle

7.72

8.37.68 1 13.04

9.60

10.

Second, 1. mistake

mistake

correct

mistake

correct

correct

7. mistakes

Three. 1.①

2.③

3.①

4.②

5.②

Four. 1.37.68 m2

2.320 square meters

Verb (abbreviation for verb) negligence

6. 1.753.6 cm

2.8 1.6 kg

3. 120 noodles

4.8.4 meters

I copied the answer to question 38 completely, so you can copy it at will.