When and how do you regroup in addition? Study the examples carefully, then complete the challenge!

Time to add! For each problem, start by adding the numbers in the ones place. If the sum is less than 10, write that number in the ones place. If it's 10 or more, write only the ones digit and regroup the 1 to the tens place. Then, add the numbers in the tens place, including the 1 you've just carried. That's how you add and regroup (or carry). Check out the example to see how it's done step by step. Then grab your pencil and add away!