Learners hone their math skills with this add 2-digit and 1-digit numbers without regrouping worksheet. Students must understand the fundamental relationships between the digits in the numbers they are adding. They add the digits at the same places to get the sum of multi-digit numbers. There is lots of practice with this concept in add 2-digit and 1-digit numbers without regrouping worksheet. In each problem, the numbers are laid out in the horizontal format. Students should try to use different strategies involving composing and decomposing numbers to solve these problems. This will help them develop flexibility and fluency.