Place Value Grids in Year 6 Place value grids are proving to be extremely popular in primary schools, not least in Year 6 to help understand very large numbers. Our latest pages use these grids to help add 100,000, 10,000 and 1,000 to numbers in the millions as well as helping to read the numbers correctly. The difficulty with working with very large numbers should not be underestimated and children will need plenty of practice writing and saying these numbers. Go to Year 6 Number and Place Value