There are () ten and () one.

2, the unit is 8, the decimal number is 5, and this number is ().

3. The two numbers adjacent to 40 are () and (). Of the two numbers 22 and 30, () is close to 27.

4. The number of 1 less than 100 is (), 40 is 1 greater than (),1less than ().

5, 50 Angle = () yuan, 1 yuan 6 Angle = () Angle.