Two Digit Addition Without Regrouping

The addition in math is adding up the numbers or amounts together, and calculate their total. It is a process of finding up the sum or total of two and more numbers.  In elementary math addition, addition is an arithmetic operation which is the inverse of subtraction, where it can start with this two digit addition without regrouping.   Two Digit Addition Without Regrouping   15 + 3 = ____ 72 + 1 = ____

23 + 5 = ____     32 + 3 = ____ 65 + 4 = ____ 36 + 1 = ____     22 + 3 = ____ 42 + 7 = ____ 41 + 7 = ____     40 + 7 = ____ 53 + 5 = ____ 40 + 8 = ____     21 + 4 = ____ 55 + 4 = ____   Answer for: Two Digit Addition Without Regrouping