# The Craft of Word Problems

## CONTENTS OF CURRICULUM UNIT 04.05.02

- Purpose of Unit
- Introduction and Rationale
- New Haven Public Schools Mathematics Standards
- Unit Objectives
- Whole Class Interaction
- Discussion
- Guided Practice
- Independent Practice
- Lesson Plan Timeline
- Bibliography for Teachers
- Student Resources
- Materials for Classroom Use
- Appendix A
- Appendix B
- Appendix C
- Appendix D
- Appendix E
- Appendix F
- Appendix G
- Appendix H
- Appendix I
- Notes

### Unit Guide

## Developing Word Problems: A Student’s Task

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## Appendix G

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C.1.
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Tony and I were comparing our baseball card collections. I have 19 less than Tony. I have 33. How many cards does Tony have?

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Operation utilized: addition with regrouping
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C.2.
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Tony and I were comparing our baseball card collections. I have 19 less than Tony. Tony has 52 cards. How many cards do I have?

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Operation utilized: subtraction with regrouping
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C.3.
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Tony and I were comparing our baseball card collections. I have 9 times as many cards as Tony. Tony has 12 cards. How many do I have?

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Operation utilized: multiplication
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C.4.
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Tony and I were comparing our baseball card collections. I have 9 times as many cards as Tony. I have 108 cards. How many cards does Tony have?

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Operation utilized: division
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C.5.
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Tony and I were comparing our baseball card collections. I have 9 times as many cards as Tony and 9 more besides. Tony has 9. How many cards do I have?

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Operations utilized: multiplication and addition with regrouping
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C.6.
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Tony and I were comparing our baseball card collections. I have 9 times as many cards as Tony and 9 more besides. I have 90 cards. How many cards does Tony have?

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Operations utilized: subtraction with regrouping and division
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C.7.
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Tony and I were comparing our baseball card collections. Tony gave me 6 cards and then we both had 23. How many cards did I have before he gave some to me? How many cards did Tony start with?

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Operations utilized: subtraction with regrouping, multiple steps and questions
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C.8.
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Tony and I were comparing our baseball card collections. I had 17 cards and Tony had 29. Tony promised to give me some cards so we could have the same number of cards. How many did Tony give me? How many did I end up with?

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Operations utilized: addition and subtraction with regrouping, multiple steps and questions
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C.9.
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Tony and I were comparing our baseball card collections. Tony gave me 6 cards and then we had the same number. I started with 17 cards. How many cards did Tony start with?

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Operations utilized: addition and subtraction with regrouping, multiple steps and questions
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C.10.a.
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Tony and I were comparing our baseball card collections. I had 5 times as many cards as Tony and 6 more besides. I have 41 cards. How many did Tony have?

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C.10.b.
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Three of our friends (Pat, Jorge, and Mike) came and wanted to share our cards. Pat had 6 cards, Jorge had 8 cards and Mike had 4 less than Tony. If we share all our cards equally how many will each person get?

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Operations utilized: division, addition and subtraction with regrouping, multiple steps and questions
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C.11.a.
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Tony and I were comparing our baseball card collections. I had 5 times as many cards as Tony and 6 more besides. Tony has 7 cards. How many cards do I have?

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C.11.b.
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Three of our friends (Pat, Jorge, and Mike) came and wanted to share our cards. Pat had 2 less than Jorge, Jorge had 1 more than Tony, and Mike had 4 less than Tony. If we share all of our cards equally how many will each person get?

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Operations utilized: multiplication, addition and subtraction with regrouping, multiple steps and questions
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