Question

20 +63 without rewriting find the sum using mental math

Answer 1

20+63.


To add in your head, just take the 3 in 63 and add the 0 from the 20 to it. That leaves 3 right? And then take the 6 in 63 and add the 2 from the 20. This comes out to:

83

Answer 2

83 is the answer hope I helped you