Add a Single-Digit Number with No Regrouping 1-108
Add 2-digit and 1-digit numbers with no regrouping. First add the ones, then add back the tens to get the total. What's 26+2? Since 6+2 = 8 and 20+8 = 28, 26+2 = 28. Start by modeling numbers with concrete Base 10 Blocks or snap cubes. Progress to using pictorial number bonds and finally, just mental math.
