Singapore Primary Math Explained sc-math

Updated: 6 March, 2005

Part-whole model | Comparison model | Solving model diagrams |

Students in Singapore Primary Schools often use the model approach to solve math problems. This approach generally uses bar diagrams to show the relationship of the variables or objects in the problem sum.

The two basic models used in the model approach are the **Part-whole model** and the **Comparison model**.

This approach uses a single bar diagram to represent the problem. It is used in problems where you need to find the whole given the parts or the parts given the whole.

Mr Lim bought a magazine and a book for $20. The magazine costs $8. How much did Mr Lim pay for the book?

Cost of book = $20 - $8 = $12 Mr Lim paid $12 for the book.

Peter has 30 books.

3 |

5 |

5 units = 30 books 1 unit = 30 ÷ 5 = 6 books 2 units = 6 × 2 = 12 books Peter has 12 science books

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