Max Maths, Year 5, Learn together, Deriving pairs of decimals with a total of 10

In the Max Maths Year 5 curriculum, students expand their understanding of number pairs to include decimal numbers that add up to 10. Building on their previous knowledge of number pairs that sum to 1, they learn to apply this to derive pairs of decimals that total 10. The process is straightforward and involves breaking down the numbers into their whole and decimal parts. For instance, to find a pair that adds up to 10, students can look at the numbers 2.4 and 7.6. They start by adding the whole numbers: 2 plus 7 equals 9. Then they add the decimal parts: 0.4 plus 0.6 equals 1. Finally, they combine these two results to confirm that the total is indeed 10, as 9 plus 1 equals 10.

Encouraging hands-on practice, the 'Let's Try It' section prompts students to apply this method to other pairs of decimals. For example, they are presented with the numbers 6.2 and 3.8. The exercise guides them to first add the whole numbers (6 plus 3) and then the decimal parts (0.2 plus 0.8). This step-by-step approach helps to reinforce their understanding of decimal addition and the concept of equivalent sums. Students are then directed to workbook pages for further practice, where they can consolidate their skills and deepen their comprehension of decimal number pairs that total 10.