Adding 2-digit numbers with regrouping

Always add the ones place first.

45

+47

Always add the ones place first.

45

+47 2

1

5 ones + 7 ones = 1 ten + 2 ones or 12

45

+47 2

1

Since you cannot put 12 ones, you must regroup by putting the 22 in the onesones place and the 11 in the tenstens place.

Next, add the tens.

45

+47

1

2

9

Let’s try regrouping again!

53

+27

Add the ones ones first..

53

+27

0

1

Now, add the tenstens..

53

+27

0

1

8

64

+59 3

REMEMBER:You must add the ones ones place first.

Regroup.

1

12

Add the tens tens place.

77

+28

Your turn!Your turn!

Add the ones.ones.

55

77

+28

Your turn!Your turn!

Regroup.

55

11

Add the tens.tens.

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