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1. Part-Whole Model (Addition and Subtraction) The following examples illustrate the part-whole concepts of addition and subtraction. Example 1 (Primary 3A+) 134 boys and 119 girls took part in an art competition. How many children took part in the competition? ? Boys 134 Girls 119 Here a bar is drawn to represent the whole (total number of children). It is divided into two parts, representing the number of boys (134) and the number of girls (119) respectively. From the model, students can find

Author

Cazzac111

Language

EN