Question

Hello so i'm so confused!

Fill in the missing numbers in the calucations below:
It might be the website, but I'm to confused
263 + ___ = 1011
405 + ___ = 653

Answer 1

1st problem is 748

2nd problem is 248

Explanation:

263 + 748 = 1011

405 + 248 = 653

You just need to do this 1011 - 263 = 748

and 653 - 405 = 248