Regroup when adding 1-digit numbers

The  exercise appears under the Early math Math Mission. This exercise has the Khan Academy user practice adding one-digit numbers to two-digit numbers with regrouping.

Types of problems
There is one type of problem in this exercise:
 * 1) Add the numbers: This problem asks the student to add the one-digit numbers to the two-digit numbers and type the answer. The answer's always between under and 100. Regrouping two-digit number plus one-digit number.PNG

Strategies
Knowledge of adding two-digit numbers within 100 are encouraged to ensure success while doing this exercise.
 * 1) The answers in this exercise are always under 100.
 * 2) There is regrouping in this exercise, so be prepared to carry digits.

Real-life Applications

 * 1) Addition can be used for adding objects, like adding money totals.