Addition and subtraction strategies are one of my favorite things to teach. Teaching addition and subtraction strategies can be done in a way that can help students add and subtract effectively and more efficiently. Sign up to receive one or all of them. So, I first begin with a mini-lesson whe… With this resource, they will be your favorite too! Teaching point 1: Addition is commutative: when the order of the addends is changed, the sum remains the same. There are a handful of addition and subtraction strategies that can be taught, but in this blog post, I'm sharing exactly how I teach the split strategy for addition and subtraction. Below is a fun and interactive video for subtraction stories! Drawing a simple picture (diagram) is also another strategy students could … See full disclosure here., Teaching Addition and Subtraction Strategies, A Subtraction Example – the Split Strategy, understanding the addition and subtraction strategies, Addition and Subtraction Strategies Math Workshop Unit, http://www.corestandards.org/Math/Content/mathematics-glossary/glossary/, Math Journal Writing Response Printable & Digital (Google), States of Matter (Solid, liquid, gas) Craftivity. Subtract the elevated number in parts first subtract to the previous whole ten; then the rest. Together we check it. Sometimes if I feel my class is lacking in some terminology, I’ll also add them to the list. During the mini-lessons, I begin teaching the split strategy of addition by first making it concrete by using base ten blocks. This math strategies resource is packed with everything you need to teach subtraction strategies up to 20! We continue working on this over the several days that we are studying this addition strategy. Just FYI – 50 + 13 = 63 not 83 as it is pictured above ? Notify me of follow-up comments by email. Teach children how to subtract a one-digit number from a two-digit number across ten. This lesson with a farm shop theme introduces strategies to use when subtracting numbers across ten.Ten-frames are used to represent crates of fruit. This is where the students try a few problems that I provide them with, just like what I had modeled. After it appears that students have it down, we move into guided math, where students practice the strategy. (On some days we have a math warm-up, or a stretcher, prior to math workshop beginning.). (This sheet below and the one above is yours FREE to download. Once I felt like she really understood the process and … Clearly, they are going bananas for the split strategy! The real practice comes during the guided math activities when students get to manipulate base ten blocks and continue to practice regrouping. It is great for teaching the subtraction symbols in the context of a fun story! 2. Filed Under: Math Tagged With: subtraction strategies. The three-digit subtraction worksheets and activities in this unit focus on developing number sense using a variety of three-digit subtraction problems that increase in complexity. The kids always find this fun and memorable. What is described below are summaries from several lessons to help you understand how I teach it to help you teach your students the strategies.I always teach my math using the workshop model. Observation is an amazing assessment! Here’s our list of strategies, which we developed after a couple of weeks of work with two-digit subtraction: I did add one more variation of “Use negatives” that you can see in the previous blog post. The key ideas are: They only need to know the facts from 1-9 and know that if the first number is larger it’s “plus x” or if the first number is smaller, it’s “minus x”. All of the workshop lessons are in the I do, we do, you do format. When children are young, they tend to rely heavily on using hands-on manipulatives to solve equations. Draw a Picture! Just click here.). I always teach my math using the workshop model. **We also spend a lot of time discussing and practicing learning the difference between the minuend and subtrahend.**. Teaching students the WHY before the PROCEDURE when learning a new math concept is essential. Subtraction games help students learn the subtraction strategies. So again, there is no best way we should be teaching subtraction. Often I will have students try this out with a partner while I peek over their shoulders and take note who is still struggling a bit. We all learn concepts in different ways and math is no different. I’m going to discuss how I do it using the split strategy lessons, both adding and subtracting, from my Addition and Subtraction Strategies Math Workshop Unit. What I Have Learned © 2021 | Privacy Policy | Terms of Use | Refund Policy. Again, it’s the perfect opportunity for me to review that 12 tens is also 1 hundred and 2 tens. Additionally, students continue to work on engaging activities and games that reinforce the concepts. This is a great way for me to quickly review place value with students as I model each addend. I teach the addition and subtraction strategies the same way. After I work through the mini-lesson, I guide students into the active engagement. I model again, thinking aloud as I move my blocks around. Your email address will not be published. Compensation is most effectively used when the subtrahend of … What is described below are summaries from several lessons to help you understand how I teach it to help you teach your students the strategies. I feel this helps students keep track of the numbers and see how they are changing when we trade (or regroup). I still have students who try to just subtract in either direction, even if regrouping or negative numbers is necessary. Seriously, it can be SO tricky, but today I want to share with you 4 2-3 digit subtraction strategies that will help your students develop a deeper understanding of subtraction. Compensation: Compensation is one of my favorite subtraction strategies, because once students know how to compensate, they can begin using it in many different math situations. Learning different strategies helps empower them to choose what works for them at that moment. Subtraction Strategies Printable Worksheets These worksheets guide students in understanding important math concepts around three-digit subtraction and visual models, such as front-end estimation and subtraction within 100. Common Core Standards for 2-Digit Addition and Subtraction. Hi Amy! I actually think that using negatives is the easiest for my students to do because it doesn’t require that they know higher subtraction facts (like 15-7). I add the 8 tens and the 4 tens to get 12 tens. Use this worksheet to give your students the practice they need to nail down the concept. This resource consists 12 lessons for working with Subtraction Strategies from 20. Become a VIP member by joining my email list! And there’s the way that is known as take away, where we’re viewing the problem as take away. Just wondering….Do you have a master list of vocabulary you use? When students have grasped the split strategy, then it is time to move on to the jump strategy and the shortcut strategy. Teaching a range of subtraction strategies is important if we want kids to have mastery over the subtraction facts to 20. Practice the mental math strategies of counting back, using … Teaching points. Teaching 2-3 digit subtraction strategies is one of the most difficult skills to teach! I pull out base ten blocks creating 86 with 8 tens and 6 ones. (Which is for you to download for FREE below.). With this, I created a fun activity where students roll dice and “order” their chicken lunch and then roll the dice again to see how much they “eat” (subtract from what they ordered). I have always collected my vocabulary terms from two different websites. Ways to solve multi-digit addition problems. Sorry, I would want someone to tell me ? Then, I demonstrate that I’m going to add all the ones, so 6 ones plus 3 ones gives me 9 ones. These words go up on our math word wall. The anchor charts on this page provide examples of five subtraction strategies that can be used to mentally solve multi-digit subtraction problems efficiently and effectively, namely Use Doubles, Make a Ten, Add Up, Removal and Keep a Constant Difference. I don’t like them copying or writing because they could miss some very important processes of my thinking. 543 and we need to take away 289. How do you help your students develop various strategies for subtraction? Again for independent practice, students complete the sheet below for me to gauge students’ understanding. This resource is an extension of my Addition Strategies … Building Classroom Community During the First Few Days of School ». They will start developing the strategies on their own if they have those key understandings. This is the seventh unit in my 1st Grade Guided Math curriculum. The general thought here is that teaching lots of concrete activities that are first modeled then practiced will help your students grasp both addition and subtraction strategies faster and with better retention. I wrote recently about understanding the addition and subtraction strategies, and today I wanted to share with you just how I teach them in my classroom using the math workshop model. Then, I do it again using the tens place. The Owl Teacher | Privacy page | Disclosure Page, This website uses cookies to ensure you get the best experience on our website. Strategies: I teach five main strategies when they are learning how to subtract. There are many addition and subtraction strategies that should be taught when children are young. When Common Core stated that we needed to teach addition and subtraction strategies based on place value, properties of operations, and/or the relationship between addition and subtraction, I will admit I was at a loss for a long time. I have always referred to the hundred block (flat) as a chicken patty, the ten block (long) as a chicken finger (or chicken tender), and the ones block (cube) as a chicken nugget (or chicken popcorn). They’ve been much more accurate with this method. (You can read about this model of gradual release in math with my Teaching Math So Students Get It post.). Feel free to download the addition and subtraction independent worksheets to use with your third-grade students, by clicking here. Then, students record it on their meal ticket (practicing the split strategy). Eventually over the days, I move into three-digit numbers and semi-concrete lessons by drawing the blocks out rather than using actual blocks. Strategy 1: Subtract in two parts 1. The problems move from simple (subtracting 10s) to complex (regrouping) while practicing four main strategies: Use a Number Line, Use Base-10 Blocks, Break Apart or Ungroup, Subtracting with … Today, I wanted to share some of my favorite subtraction activities for first grade and a little about how I teach subtraction in my classroom. I also had my students do a simple subtraction sticker story. I always create an anchor chart, with my students, about what I am talking about throughout the mini-lesson. Then I introduced the subtraction strategies: During active engagement I provide each student with a quick mini-foldable and have them try it out on their own using blocks with a partner. I start my mini-lesson with base ten blocks to demonstrate splitting the minuend and subtrahend. Use part-whole models and ten-frames to investigate numbers up to 80. Your email address will not be published. The best strategy is to have kids build these three key ideas about mathematics and the numbers that will help kids with subtraction. Want more valuable teaching tips and other ah-mazing perks, such as discounts, giveaways, flash freebies, dollar deals, and so much more? However, in the subtraction strategy, I have students use sticky notes also to mark the numbers throughout the process. This unit is aligned to the CCSS and TEKS.The 12 lessons in this unit focus on:* Subtraction Review* Turn Around Facts* Subtraction and Zero (Mental I started with two-digit numbers to make it a bit easier. to get you started. And if you want to learn more about using the math workshop model in your classroom, check out my post What is Math Workshop? Represent and solve simple addition and subtraction problems using a range of strategies including counting on, partitioning and rearranging parts In Mathematics Year 1 Number and Algebra Number and place value ACMNA054 Recognise and explain the connection between addition and subtraction See more ideas about teaching subtraction, kindergarten math, subtraction. Equip children with a range of useful strategies for addition within ten, including adding and subtracting zero and one, commutativity, adding and subtracting two to/from odd and even numbers, and doubling and halving. Day 4: We started by adding "I know I can do this when I can use subtraction strategies to solve subtraction sentences." For the active engagement, during the days we spend on the split strategy for subtraction, students continue practicing the strategies by first using the base ten blocks and then working into drawings and eventually the abstract. They only need to know the facts from 1-9 and know that if the first number is larger it’s “plus x” or if the first number is smaller, it’s “minus x”. Let’s take a look at the standards that focus specifically on these next few strategies. I model by working through sample problems while thinking aloud as I work. Just use the ones that would be helpful for your students, either in the classroom as buddy work or as homework to play with a sibling or parent. You choose. We are now into our subtraction with regrouping unit this week. I’m going to discuss how I do it using the split strategy lessons, both adding and subtracting, from my Addition and Subtraction Strategies Math Workshop Unit. Teaching Addition and Subtraction Strategies. So, I first begin with a mini-lesson where I gather my students around an easel with their notebooks in hand so they can take notes. With subtraction, there’s two ways to think about subtraction. Required fields are marked *. Since this lesson requires me to demonstrate using blocks, I had my students stay where they were and used the doc cam. After I know my students understand the concept of putting … Then, I teach the teaching point of my mini-lesson. to our success criteria. First I collect them from common core, found here: http://www.corestandards.org/Math/Content/mathematics-glossary/glossary/ and from this one: http://www.ncesd.org/Page/983. Read all of my steps and download a … I model the problem 86 + 43 for students. Since I only have a small amount of time (usually 10-15 minutes), I have to be explicit. Then, I pull out 4 tens and 3 ones. So here’s the problem. Click here to subscribe. That’s one way to view it. I introduce each […] These strategies do not focus on the standard algorithm. Plans and resources for teaching subtraction Explore a wealth of resources to help you teach subtraction in Year 1 and Year 2, including PowerPoints, group activities, worksheets, and subtraction problems for mastery. The decomposing and composing subtraction strategy can be a handy tool for tough three-digit numbers. After a few minutes is up, I have students share with me their answers, or sometimes I will have a volunteer come up to the easel and share how they arrived at the answer (not just tell the class what the answer is). Get it post. ) 4 tens to get 12 tens math activities when students get it post )... Children are young of vocabulary you use they tend to rely heavily on using hands-on to. 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