# 1st Grade Math Story Problems on Addition and Subtraction within 20

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Your students are proficient in math facts but flounder when faced with story problems especially more complex ones. This set of 24 worksheets contains only scaffolded story or word problems. It is designed to assist students who are weak in story problems or are unable to make sense of addition and subtraction beyond executing the algorithm or procedure. It supplements my "weeklies" worksheets but can also be used as a standalone product and is aligned with Common Core standards in the Operations and Algebraic Thinking domain.

Features of this product:

• Covers all problem types. All problem types are covered, from simple “join with unknown result” to more complex “comparison” problems. See below for a complete list of problem types.

• Supports sense making. Alternative equations are provided where relevant to expose students to different approaches to solving problems. Students learn to make sense of problems instead of just looking for keywords and deciding on the math operation to use.

• Provides scaffolding. Each story problem contains questions to guide student thinking.

• Provides differentiation. For each problem, students can choose to draw a bar model to represent the problem. This is indicated with an *.

• Provides exposure to bar models. The ability to draw bar models is an important skill. Higher ability students can attempt to draw the models on their own after the teacher has modeled how to do it using a similar question. Alternatively, teachers can go through the models provided in the answer keys to help students make sense of the problems.

• Review-friendly. For each problem type, 2 questions are provided. The first question (those with a prefix “T”) is for the teacher to go through and model. The second question (with a prefix “S”) is for students to complete on their own. The story problems provide a useful context for teachers to talk about different types of addition and subtraction problems. This saves time allowing teachers to focus on other topics.

• Relieves teachers of marking. Students may peer check each other’s answers with the answer keys and sign off at the bottom of the worksheet. This supports collaborative learning too.

• Allows self-assessment. A way for students to quickly and easily assess their competency with the questions is provided on each worksheet. They are designed such that teachers can quickly flip through the worksheets and identify students who need assistance.

A breakdown of the types of story problems contained within:

• Worksheets T1 and S1: Join with unknown result

• Worksheets T2 and S2: Separate with unknown result

• Worksheets T3 and S3: Join with unknown result (2 steps)

• Worksheets T4 and S4: Separate with unknown result (2 steps)

• Worksheets T5 and S5: Separate with unknown start

• Worksheets T6 and S6: Join with unknown change

• Worksheets T7 and S7: Join with unknown start

• Worksheets T8 and S8: Separate with unknown change

• Worksheets T9 and S9: Part-Part-Whole with 1 part unknown

• Worksheets T10 and S10: Compare with unknown larger quantity

• Worksheets T11 and S11: Compare with unknown difference (“How many more?”)

• Worksheets T12 and S12: Compare with unknown difference (“How many fewer?”)

The worksheets are ideal for supporting any assessment including my Common-core aligned Math Weeklies Worksheets on Addition and Subtraction within 20. Go through those question types that students are weak in. They can also be used for review, assessment, homework or extra practice.

If you like this product, please give your feedback! I really appreciate it =)

You may also be interested in these related products:

This is a complete step-by-step lesson plan using the Concrete-Pictorial-Abstract approach to teaching bar modeling for basic addition. It is ideal for teaching students who are new to or struggling with bar models for addition or for introducing basic addition to students. This lesson provides a solid foundation from which to learn bar modeling for more complex problems or operation.

Common-core aligned Math Concept Worksheets on Addition and Subtraction within 20 which are focused on helping students gain sense-making and abstract reasoning skills. This is vital for first graders before they move on to math facts.

Math Craftivities on Addition and Subtraction within 20 for some variation to the concept worksheets.

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Materials are intended for personal use in one class only. For use in multiple classes, please purchase additional licenses.

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Total Pages
52 pages
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