Question

45,672+2,988

Answer 1

48660 with a calculator.

If you want to try and do this in your head, you might notice that 2,988 is very close to 3000 , which would be easier to add. You can subtract 12 from 45672 and add it to 2988 which = 45660 + 3000, or 48660.

Similarly, you could just add 3000 to 45672 = 48672
and then subtract 12
= 48660