Year 5 Mental AdditionChildren need plenty of practice at adding larger numbers mentally. This often involves adding multiples of 1,000 or even 10,000 to 5 or 6-digit numbers. When working with such large numbers it is easy to make errors or read the number incorrectly. We have just added further sets of pages on this topic for Year 5 and the adding by counting on pages are especially useful.Go to Year 5: Addition