Max Maths, Year 4, Learn together, Multiplying 2-digit numbers with regrouping (2)

In this mathematics exercise for Year 4 students, the task is to calculate the total number of pencils in three containers, given that there are 25 pencils in one container. To find the answer, the exercise introduces the concept of multiplication using the column method, which is a systematic approach to multiplying two-digit numbers with regrouping. Students are instructed to align the numbers in columns, ensuring the larger number is placed above the smaller one, in this case, '25' is written above '3'.

The first step of the column method involves multiplying the ones. In our example, the number '5' in the ones column of '25' is multiplied by '3'. This calculation results in '15' ones, which means there is a need to regroup because the product is a two-digit number. The '1' in '15' is carried over to the tens column. The process is explained clearly so that students can understand how to handle regrouping when multiplying by a single-digit number. By following these steps, students learn to accurately calculate the total number of pencils in three containers.