What if I wanted to do LR Addition/Subtraction with rounding up while using the Math Palace Technique? Assuming that I have a long number and that, I have to carry over/borrow a lot of numbers.
*The Math Palace Technique would come in handy for remembering all the numbers.
*LR addition/subtraction with rounding up would come in handy too as I would avoid carrying over or borrowing too many numbers, which makes the problem even more difficult.
When you use the MATH PALACE, do you consider rounding-up only when it’s needed? For example, if you were asked to calculate
503 401 – 398 972 = ???
How would you work out the answer? Would you round-up “398 972” while using your Mental Math Palace, making more palaces? or do you have any other method for doing that?
Have a nice day ahead
Best regards and thank you in advance