The Primary Mathematics U.S. Edition series of elementary math textbooks and workbooks is meant to be part of a system of learning in which adult supervision and independent practice go hand in hand. The main feature of this series is the use of the Concrete> Pictorial>Abstract approach. The students are provided with the necessary learning experiences beginning with the concrete and pictorial stages, followed by the abstract stage to enable them to learn mathematics meaningfully. This approach encourages active thinking process, communication of mathematical ideas and problem solving. This helps develop the foundation students will need for more advanced mathematics.
Practice exercises are designed to provide the students with further practice after they have done the relevant workbook exercises. Review exercises are provided for cumulative reviews of concepts and skills. All the practice exercises and review exercises are optional exercises.

The color patch is used to invite active participation from the students and to facilitate oral discussion. The students are advised not to write on the color patches.

Above extract from Preface of Primary Mathematics U.S. Edition (reproduced with the permission of the publishers).

The textbooks contain the learning tasks for students to do under adult supervision and interaction, along with practice and review problems. They are meant to be non-consumable and to be used along with the Primary Mathematics Workbooks.

Answers or answer keys for Primary Mathematics U.S. Edition textbooks and workbooks are found in the teacher's guides and home instructor's guides. Answer keys booklets are also available - one for Primary 1-3 and one for Primary 4-6.

Primary Mathematics U.S. Edition 2A

Units highlighted in red are in this U.S. Edition but not in the 3rd Edition of Primary Mathematics.

1. Numbers to 1000

- Looking Back
- Comparing Numbers
- Hundreds, Tens and Ones

2. Addition and Subtraction

- Meanings of Addition and Subtraction
- Addition Without Renaming
- Subtraction Without Renaming
- Addition With Renaming
- Subtraction With Renaming

3. Length

- Measuring Length in Meters
- Measuring Length in Centimeters
- Measuring Length in Yards and Feet
- Measuring Length in Inches

4. Weight

- Measuring Weight in Kilograms
- Measuring Weight in Grams
- Measuring Weight in Pounds
- Measuring Weight in Ounces

REVIEW A (test on concepts learned in chapters 1 through 4)

5. Multiplication and Division

6. Multiplication Tables of 2 and 3

- Multiplication Table of 2
- Multiplication Table of 3
- Dividing by 2
- Dividing by 3

REVIEW B (test on concepts learned in chapters 1 through 6)

REVIEW C (test on concepts learned in chapters 1 through 6)

Samples

Chapter 2: Addition and Subtraction - Addition Without Renaming

Chapter 3: Length - Measuring Length in Centimeters

Chapter 3: Length - Measuring Length in Inches

Chapter 5: Multiplication and Division - Multiplication

All copyrights reserved by Marshall Cavendish International (S) Pte Ltd.