# double digit addition with carrying

Discussion in 'Second Grade' started by Learner4Life, Jan 10, 2008.

1. ### Learner4LifeCohort

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Jan 10, 2008

My 2nd grade Title 1 students are working on double digit addition with carrying and I'm trying to find fun lessons to do with them on this stuff but all I can seem to find is worksheets. We've used the base-ten blocks for those more tactile learners but I want something more. I'm thinking of having them use dominos to make a problem on their desks and we've played tic-tac-toe addition style. What are some lessons you've used to really get the concept through? (I only have them for a 1/2 hour)

3. ### ElcsmithCompanion

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Jan 10, 2008

I am also teaching this concept and my kids have nailed it! I'm so proud of them. Here's what I did. I worked on it for about a week. 15-20 minutes whole group then about 10-15 minutes with small groups (per group.) I wrote the problem and we worked it using base ten blocks. I explained that rods cannot go with units and units cannot go with rods. I explained that you change 10 units for a rod. Then we played a game in small groups. two people were counters, one person was a joiner and the other was the trader. The trader is really mean and picky. He will only give you a rod if you give him exactally 10 units. So if the problem was 27+14 one counter counts out 27, the other counts out 14. Then the joiner puts 27 and 14 together and sees if there are enough units to make a trade. If there are they have to ask the trader to PLEASE make a trade.
The kids begged to play everyday! I hope that makes sense and helps!

4. ### MollyTCompanion

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Jan 11, 2008

Elcsmith - what a great idea! I love it. You are so smart to think of this.

Some kids have trouble getting the trading and giving them each a job is so kewl.

I will definately be using this idea this year. Thanks!

5. ### corps2005Cohort

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Jan 11, 2008

What a neat idea! We are starting this concept next week. It's a great way to involve various levels too! Thank you for posting this!

6. ### ElcsmithCompanion

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Jan 15, 2008

Just to follow up. I'm so proud EVERY student in my class has mastered this skill! AWESOME FEELING!

7. ### Learner4LifeCohort

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Jan 16, 2008

My kids got it too! Each one of them got a 95 or better on their tests (great for title 1 kids)... HOWEVER, we are now on to subtraction and I've never heard more whining in my life!!!

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Jan 16, 2008

9. ### Queen13New Member

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Sep 5, 2012

I have been teaching for a few years.....and this seems to work!
I explain it to the kids as a semi-detached house...
I draw this on the board....
Tens live on one side and ones/units live on the other.
There can only be 9 living in the ones side....as soon as there are ten I make a bundle of 10....and they go to the tens. I visually draw it and have a door step on the tens, where the NEW tens stand.....
Kids really relate to this concept BUT it is very visual. And we do heaps of buddling of tens and one before....
If you'd like to know more....let me know
Good luck

10. ### txstarNew Member

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Dec 15, 2012

I hope I explained this clearly enough to understand.

11. ### RabbittConnoisseur

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Dec 27, 2012

I also have them write it out is expanded form.
This works especially well with subtraction.

143 = 100 + 40 + 3
274 = 200 + 70 + 4
300 300 + 110 + 7
110
7
417