This is a whiteboard sheet that we go through daily.The number line at the bottom helps students solidify their understanding of both how to use a number line and how “make 100 or make 1000”. In this activity, students practice making jumps of 10 and 100 up a number line.We do use real foam blocks in class, but I try to move away from them as quickly as possible. Students will always have pencil and paper to solve problems, but they won’t always have manipulative available to them. I don’t mind spending the time on them, for students who need them, but I also want to push students toward more efficient tools.

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In this activity, students are practicing how to add up, starting at the smallest number and figuring out who tot get to the larger number by jumping to the friendly numbers.

This student started at 19, jumped to 20, then made jumps of 10 to 60 and made a jump of 3. The above are a few examples from my Two-Digit Addition Math Stations.

We spend a lot of time discussing a variety of strategies, using many different models, and doing mental math. based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method.

Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.

When looking at the standards above, I can see that the strategies are clearly noted in the standard: In 2. B.5 and the strategies are: As you can see, the strategies are clearly outlined in the standards.

Now within each of the above general strategy categories, there really are many different strategies that students can use and you can label them whatever you’d like in your classroom.

Go ahead and question it, think about it, mull it over and figure out whether it’s accurate or not. Here are some anchor charts that I’ve used the past couple years that illustrate some of the below models and strategies. They are what I have found useful in the classroom for students to practice and use to build conceptual understanding and number sense.

Below are a few models that we use do two-digit addition or subtraction. I usually start with number lines when I introduce students to paper / pencil models. Students can make jumps of one or ten (or more) and easily manipulate it to show their mathematical thinking.

Are you interested in a free sampler of some of my Two-Digit Addition and Subtraction Products?

are how the strategies are organized on paper so that students can explain or see the strategy.

Math Worksheets Grade 3 Word Problems Addition. Simple addition word problem worksheets. These third grade math worksheets have word problems on simple focus here is on solving real life situations by using addition, rather than the mechanics of addition.…

• ###### Addition Problems – Free Addition Problems for Kids – Math.

In order to solve addition word problems, children must be able to understand how addition is used in everyday life. For most children, this concept is not difficult to understand at all. As with simple math problems, enough practice solving addition word problems will remove difficulties children may have with them.…

• ###### Dynamically Created Addition Worksheets - Math-Aids. Com

You may select up to 30 addition problems per worksheet. 2, 3, or 4 Addends Vertical Format - 5, 6, or 7 Digits These addition worksheets may be configured for different combinations of 2, 3, or 4 Addends with 5, 6, or 7 digits. You may select up to 30 addition problems per worksheet. Visual Addition Addition Worksheets…

• ###### Addition Word Problems -

We have to start somewhere, and these addition word problem worksheets are the easiest introduction to using stories to describe math problems. These are perfect for first grade or second grade students who have a basic understanding of addition facts and are looking to apply that knowledge to real-world situations.…

• ###### How to Teach Addition and Subtraction Word Problems

How to teach addition and subtraction word problems. The main components of teaching addition and subtraction word problems include Teaching the Relationship of the Numbers – As a teacher, know the problem type and help students solve for the action in the problem…