Lockdown : Number of the day

NUMBER OF THE DAY :

422

1. In Words = four hundred and twenty two

2. 10 less = 412
3. 15 more = 467 * 437 (Don't ask how I got it wrong) 
4. Add 115 = 537 
5. Round to nearest 100 =400
6. Odd or even? = even
7. Complete the pattern. Add 8: 422, = 430, 438, 446
8. List some factors = 1, 2, 211, 422
9. Divisible by 3? = No
10. Find one tenth = 42.2

9/10 
My mistake (no. 3) would be due to the fact I am tired while doing this task.