Techy Tuesday + Snowy Afternoon = Addition with Regrouping

So this week we have been working on Addition with Regrouping!

Here is a video to show you how to add when you have to regroup. Remember it might be with two digit numbers!!

Let’s show our thinking and add the addition problem 64 + 2

Decompose your number:  64 = 60 + 4

Ones first:  4 + 2 = 6

Tens next:  60 + 0 = 60

Sums finally:  60 + 6 = 66

Below I would like for you to show me your thinking in how to solve the problem 36 + 15

Challenges: 

72 + 39

38 + 36

45 + 17

54 + 23

You can use the strategy we did today if you would like.  

  

 

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