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# Addition and Subtraction Bar Models/Tape Diagrams - Singapore Math

Common Core Standards
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756 KB|65 pages
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Addition and Subtraction with Model/tape diagrams teaches students to determine unknown whole number in addition and subtraction equations by interpreting and understanding “WHY” and “HOW” to solve such equations.

Using the model method, young learners are able to visualize the concept. It sets a strong foundation for young learners before they progress to problem solving.

This pack of resources help students to understand:
- Why subtraction is applied when solving an unknown addend problem. (For example 7+ ___=10)
- How to determine unknown whole number on the left side of an addition or subtraction equation. (For example __+ 8 = 10, 5 + __ = 11, __ - 8 = 10 and 14 - __ = 5)
- How to interpret “more than” or “less than” problems without relying on “cue word”.

Included in this pack are:
Illustrations on
1. Part Whole Model
2. Comparison Model
How these models are applied to various types of addition and subtraction problems.

Exercises for students to practice
1. Add when two parts are given (12 exercises)
2. Learn to Subtract when whole and part are given (12 exercises)
3. Learn to Find the unknown number in an addition equation (10 exercises)
4. Learn to Find the unknown number in a subtraction equation (10 exercises)
5. Learn to Add and Subtract with “more than” or “less than” without “cue word”. (20 exercises)

Note that the exercises here involve add and subtract within 20. This resource is also useful for revision with 2nd graders who are struggling to determine unknown whole number on the left side of an addition or subtraction equation.

Based on Singapore Math (rank #1 Globally in most recent 2015 TIMSS)

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Total Pages
65 pages
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\$6.80
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