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Always add the ones place first
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Adding 2-digit numbers with regrouping
Always add the ones place first.
45
+47
Always add the ones place first.
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+47 2
1
5 ones + 7 ones = 1 ten + 2 ones or 12
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+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.
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+47
1
2
9
Let’s try regrouping again!
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+27
Add the ones ones first..
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0
1
Now, add the tenstens..
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0
1
8
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+59 3
REMEMBER:You must add the ones ones place first.
Regroup.
1
12
Add the tens tens place.
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+28
Your turn!Your turn!
Add the ones.ones.
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+28
Your turn!Your turn!
Regroup.
55
11
Add the tens.tens.
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