Hello students, In ICSE syllabus for class 3 maths we multiply various numbers which are also repeated in 4th grade math. To multiply the numbers we follow some models so that we can easily multiply. Models are the easy representation of anything. Now I am going to show you some models for multiplication.
Repeated Addition: - In this we can add repeated numbers, by doing this we will also get the same result. For example in this row 7 8 4 6 3 7 4 3 4 7 6 3 4 6 3, 7 is appearing at three times. If we add the 7 + 7 + 7 than we get 21 and if we multiply the 7 from 3 times ( because 7 is appearing in that row at 3 times ) 7 * 3 = 21. So both will produce same result.
Sets : - In this model like we have 3 sets and every set contain the 7 elements than the multiplication result will be 3 * 7 = 21.
Combination : - In this model, we make a combination of similar elements and then multiply them.
Arrays : - In this we multiply the numbers row and column wise.
Scale model : - Generally used in image type objects. More understand by graphically.
Models simplifies the process of multiplication.
I hope the information about the multiplication models will make sense to Grade III students.