Max Maths, Year 4, Learn together, Multiplying 2-digit numbers without regrouping (4)

In a Year 4 mathematics lesson, students are learning to multiply 2-digit numbers without the need for regrouping. The example given demonstrates how to find the product of 42 and 2 using the column method. This method is a systematic approach that involves writing the numbers in a vertical format, ensuring the larger number is placed on top. The process is broken down into clear, manageable steps for the students to follow.

The first step in the column method is to multiply the ones. The number 2, which represents the ones in the number 42, is multiplied by 2, resulting in a product of 4 ones. This is written in the ones column of the answer. The next step is to multiply the tens. The number 4, representing four tens, is also multiplied by 2, leading to a product of 8 tens. The result of this multiplication is placed in the tens column. By following these steps, students can easily find that the product of 42 and 2 is 84, as shown in the calculation. This methodical approach helps build confidence and accuracy in performing multiplication without regrouping.