Multiplication and Division (1) - Divide by 10 - Presentation

In a mathematics lesson focused on division, students revisit the concept of dividing by 10. The lesson prompts them to recall what they previously learned about multiplication by 10, asking them to consider what changes and what remains the same in the process. Through a series of activities, the students explore how dividing by 10 affects the placement of digits within a number. For example, they learn that when dividing a number like 420 by 10, the digits shift one place to the right on a place value chart, resulting in an answer of 42. This reinforces the understanding that dividing by 10 effectively decreases the value of each digit by one place value.

Further activities involve using place value charts and dienes blocks to illustrate the concept of division by 10 in a tactile and visual manner. Students divide various numbers, such as 1,230 and 5,060, by 10, observing the pattern of the digits moving to the right and understanding the reason behind not needing to write a zero in the tenths place when it is not necessary. Real-world applications are introduced through problems involving sharing money among friends, providing a practical context for the division operation. The lesson also includes reasoning exercises where students apply their knowledge to solve problems with given clues, such as determining the correct vest numbers for children in a race based on their relationship to each other when divided by 10.