Max Maths, Year 4, Learn together, Addition of 3-digit numbers using regrouping and column method (4)

In the Max Maths Year 4 curriculum, students are guided through the process of adding 3-digit numbers using regrouping and the column method. The lesson is broken down into clear, manageable steps to help children understand the concept. The first step involves adding the ones. For example, when adding 239 and 382, students start by adding the numbers in the ones column: 9 ones plus 2 ones equals 11 ones. This sum is then regrouped into 1 ten and 1 one, which is carried over to the tens column.

The second step is to add the tens. Students add the regrouped ten to the original tens from the numbers being added: 1 ten plus 3 tens plus 8 tens equals 12 tens. Again, they regroup the result, this time into 1 hundred and 2 tens, and carry over the hundred to the hundreds column. The final step is to add the hundreds: 1 hundred plus 2 hundreds plus 3 hundreds equals 6 hundreds. By following these steps and regrouping where necessary, students find that the sum of 239 and 382 is 621. This methodical approach helps to build a strong foundation in addition and number sense for Year 4 students.