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

In a Year 4 Maths lesson, students are learning to multiply 2-digit numbers without the need for regrouping. The example provided helps to illustrate this concept by asking the question: If there are 21 apples in each basket, how many apples are there in 4 baskets? To visualise the multiplication process, counting blocks are used, representing tens and ones. The problem is set out in a clear and structured way, showing that four sets of 21 apples are laid out in rows of tens and ones. The number 21 is broken down into 20 (two tens) and 1 (one one), and this is repeated across four rows.

The calculation is then demonstrated step-by-step. First, the number of apples in each basket is added together: 21 + 21 + 21 + 21. This is simplified by adding the tens separately from the ones: 20 + 20 + 20 + 20 and then 1 + 1 + 1 + 1. The tens add up to 80 and the ones add up to 4, which when combined give a total of 84 apples. By breaking down the problem in this way, students can easily see that 4 multiplied by 21 equals 84. Therefore, the answer to the question is that there are 84 apples in 4 baskets, demonstrating a clear method for multiplying two-digit numbers without regrouping.