Showing posts with label subtraction with regrouping. Show all posts
Showing posts with label subtraction with regrouping. Show all posts

Addition & Subtraction with Regrouping {Ideas & Activities}

Looking for some ideas and activities to practice addition and subtraction with regrouping?  Well, you have come to the right place!  

Activities to Teach Regrouping

Let's be honest, worksheets filled with two or three-digit addition and subtraction problems are boring.  Yes, there is a time and a place for these resources, but why not spice up your classroom practice with some hands-on fun?

But first, a word about strategies.  When working with two or three-digit addition or subtraction, I believe that students should be exposed to a variety of problem solving strategies. What works best for one learner might not work best for another, and I tell my students this. 


Once I introduce a new strategy, I like my kids to practice it independently so that they can decide whether that method works best for them.  So, after teaching and modeling a strategy, I let my students give it a go.  One easy way to do this is with the use of task cards.


I recently introduced the open number line strategy,  After modeling this strategy, my students used task cards to practice it at their own pace.  I simply took the task cards off their rings and set them at each table group where the students shared the stack of cards.


This easy idea will work for use with any strategy you might teach.  Here's an example of this using some Scoot cards (which are basically a type of task card) to practice the partial sums strategy.


Ahead of time, I folded some copy paper into thirds and the students used their crayons to draw lines along the folds. This helps them to see the designated space for each problem more easily.  I typically have them practice six problems using the introduced skill.  This gives them some good practice and experience to help them decide whether it's a strategy they want to rely on.

Once I have introduced all of the strategies, it's time for some hands-on fun!  When participating in these activities, the students know that they can use whichever strategy they want.  So, keep reading, grab the freebie, and feel free to pin your favorite ideas!

Make Some Stuff
Crafty projects are always a hit when practicing addition and subtraction with regrouping.  Brag tags are big in my classroom. Last year, I had the idea of letting the kids make their own tags where they could brag about their multi-digit addition and subtraction skills.  Well, let me tell you, the kids thought it was super duper, crazy cool to make their own addition/subtraction brag tags. 


Another crafty idea is to make a hat.  I used this idea on Valentine's Day one year.  That particular year, candy was off limits which meant no conversation heart math.  Womp womp.  No fear, die cut shapes came to the rescue.


The great thing is, this idea can be used with any holiday theme, or none at all.  Plus, it can also be used when practicing two OR three-digit addition and/or subtraction. Here is a spring version I plan to have my students make soon.   



Solve, Cut, and Glue
Sorts are a great way to give students some hands-on practice.  There are so many ways to sort multi-digit problems: regrouping/no regrouping, even or odd answers, by sums or differences, and so on.  Here are a few flap book sorts we've done this year.





Play Games
Pick a card is a class favorite.  We use it when practicing two and three-digit addition and subtraction.  Students pick two cards, add (or subtract), and then color the boxes on their page after comparing answers with their partner.


Spinner math is always a huge hit with students. The kids treat it like a game.  I often hear them sharing their answers with each other, because they think it's pretty cool when they spin problems with really large sums.  Spinner math is hands-on, engaging, and pretty.darn.exciting.  Honestly, I don't know what it is about using a paperclip that is so darn appealing.  But, I don't question it. I embrace it.  



I also love to bring out whole group games/activities that encourage individual engagement within a whole group setting.  I Spy is a great way to do this!  The kids are up and moving about, all the while practicing their math skills. You can read more about I Spy here.


Scoot is another fun whole group game to practice regrouping skills.  The kids love it, and it's also a great way to encourage individual engagement within a whole group setting.  Sometimes, I use my Scoot cards to facilitate a game of I Spy.  You can read more about Scoot here.


These games and activities can be found here and here.

Go Shopping
Don't worry, I'm not suggesting a trip to your local super store.  Let your students shop those weekly grocery ads that fill up your mailbox week after week.


You could have your students choose two items to buy and add up their prices.  Or, you could have them practice their subtraction skills by tasking them with comparing the prices of selected items.  This activity would work with two or three-digit numbers. You can grab the free recording forms here.

Tip#1: Be sure to remove (cut out) any pictures of alcohol or other items you don't want your students exposed to.
Tip #2: When working with three-digit numbers, you could have your students use dollar signs and decimal points, or you could have them write these amounts as three digit numbers.  It's totally up to you!

I hope you've been able to take away an idea or two today!

PIN IT: DON'T FORGET IT!

Activities to Teach Regrouping

Many of the activities shown in this post can be found in the resources posted below.  You can check them out in my TPT store.  Simply click the image of the product(s) you'd like to see.

https://www.teacherspayteachers.com/Product/Two-Digit-Addition-and-Subtraction-Activities-1447273


https://www.teacherspayteachers.com/Product/Three-Digit-Addition-and-Subtraction-230607




Here are a few more related products for your convenience.  Click on an image for more details.






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Brag About It!

This week, I had my final observation of the year.  You know, the "formal" one.  Although it went well, I'm not here to brag about that. ;)  Instead, I'm here to brag about a fun project that my students did today! 


We spent this week reviewing two-digit addition and subtraction. Since my kiddos have gotten pretty good at this skill, I thought they might have fun bragging about their "mad skills" by creating their very own set of two-digit addition and subtraction brag tags!

As you know, I use brag tags in my classroom as part of my classroom management system.  These special necklaces are a huge hit with the students, so I knew they would love to make their own necklaces that show off their two-digit addition and subtraction skills.  And, they did!  They were so excited about this project!




Interested in using the idea? It's easy!  Here's what you'll need:
  • yarn (I cut it ahead of time)
  • brag tag template (download HERE for free) copied onto construction paper or card stock
  • pencils and/or markers
  • hole punch
The download includes student directions, but I added a few things.  For example, I told the kids that they had to: 
  • have an equal number of addition and subtraction problems
  • create problems that included regrouping (I didn't tell them how many problems needed to include regrouping, I jut wanted to make sure they had a mixture of problems with and without regrouping)
  • decorate each tag with marker and/or colored pencil
Before they decorated their tags with marker or colored pencil, I checked their math.  Once they were given the "OK," they were allowed to decorate.

Here is look at a few more of their completed brag tags.




    Once I checked their work and gave them the go ahead to trace their problems, they decorated each tag, cut them all out, and then assembled them into necklaces.  I helped them tie the yarn, and yes they all seemed to finish at the same exact moment, but that's life in the classroom, right?  Hehe.

    Toodles!



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    Snowball Scoot {Just Sharin' a New Freebie}


    I am a planner.  I am always thinking down the road and prioritizing my tasks.  I take a slight thrill in making a to do list, only to cross things off that list.  I think I've made my point.  Hehe.

    Well, because I'm a planner, I have been busy planning out my next few weeks and decided that it would be a good idea to review two-digit addition and subtraction before our Winter Break.  I immediately thought of Scoot.

    My students never, ever tire of Scoot (and thank goodness for that).  Click here to read all about this amazing engagement strategy, and grab some tips and tricks while you're there.

    So, back to our review.  I needed a resource that had my students practicing both addition and subtraction, so I made one.  :)

    http://www.teacherspayteachers.com/Product/Snowball-Scoot-2-Digit-Addition-and-Subtraction-FREEBIE-1008242

    Now, I know I can't be the only second grade teacher out there looking to review these skills, so if you could use this activity, then be sure to grab this freebie on TpT.

    Toodles!

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    Three Digit Addition and Subtraction is Fun!

    This week in math we have been reviewing three-digit addition and subtraction.  Let's be honest, this isn't a very exciting topic in math.  Since we finished up the unit in our math series, we have continued to work on this skill.  Three-digit add/sub is kind of our big hurrah in second grade these days so I figure the students should have a firm grasp on it before leaving me. 

    Each day we have done a different activity to practice this skill.  Each one has been engaging, interesting, and fun.  Today when I told them they would be practicing this skill once more, they actually got excited...over three-digit addition and subtraction, my friends.  Weird, but awesome!  Here are a few of the activities we've done.

    Roll a Number Sentence: The students rolled three numbers and used them to make two different 3-digit numbers (largest number possible and smallest number possible).  Then, they added those numbers together.  They also completed a subtraction version.  Every time they rolled a number or got a large sum, they announced it to their peers.  Who would have thought they would enjoy it so much?

    5 in a Row: This partner game is always a hit in my room.  For this version, they used the pink and purple cubes pictured above to build a number sentence.  They used scratch paper to solve each problem.  I bribed them to be extra careful with the cubes and it worked because I will be able to use them again next year. Woo hoo!

    Spin a Number Sentence: I had the students complete an addition and subtraction version of this activity.  They used a paperclip and the spinners at the top of their page to build number sentences.  Once again, there was a lot of announcing going on, "Whoa, I got 638!"  I figured as long as they were excited about what they were doing, I'd let it go.  They loved this!

    All of these activities came from my Three-Digit Addition and Subtraction Fun Pack.  Since we haven't used all of the activities in the pack yet, we will likely do some more review of this skill next week.  I think I'll keep it secret and surprise them (still can't get over how much they are liking this skill-yipee!).

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    Hands-On Addition & Subtraction w/Regrouping

    This past week in math we finished up our unit on money.  With only three days before Spring Break I really didn't want to start anything new with my kiddos.  So, I whipped up a few resources for them to review their two-digit addition and subtraction, with and without regrouping (geesh, that's a mouthful).

    https://www.teacherspayteachers.com/Product/Hands-On-Two-Digit-Addition-and-Subtraction-Common-Core-Aligned-222703

    I wanted them to review these important skills but thought it would also be good if I could incorporate some other review skills.  So, I came up with three different activities:
    • a two-digit addition sum sort (sums are sorted into the categories even and odd)
    • a two-digit subtraction sort (differences are sorted into the categories regrouping and no regrouping)
    • a two-digit addition and subtraction sort (answers were sorted into the categories of greater than and less than 50).
    Each sort was put together as a booklet.  I simply folded 12 x 18 inch construction paper half.  The students glued a cover page to their booklet and then cut out the sort headers and glued them to the "pages" on the inside.  After they solved all of the math problems they cut them out and glued onto the pages of their booklet.  I used a different color of construction paper for each book.  Here are a few pics (please excuse the blur):




    Let's be honest, when focusing on the written method things can become a bit boring, especially when you're 7!  But, the kids LOVED this project.  I wasn't quite sure how they would take to three days of it, but they honestly didn't care...they love to cut and glue and make a mess all over the floor.  They are doing math, but they think they are doing a "project."  Well, I guess in a way it is a project. 

    Not only did they love these activities, but they did awesome!  Yes, I checked every single one.  There were minor errors here and there, to be expected, but overall they were very successful.  Yay! 

    This product is available in my TPT store.  Simply click here to purchase!

    https://www.teacherspayteachers.com/Product/Hands-On-Two-Digit-Addition-and-Subtraction-Common-Core-Aligned-222703

    Happy sorting!

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