If you have 20 tens you have 200. You don't need the rest.
There are 20 tens in 200 !
3 tens
10*20 = 200
20
360
20
l̊ol
well if going by tens it would be two rows of ten to make 20.
there are 200 tens in two hundred
If you have 20 tens you have 200. You don't need the rest.
There are 20 tens in 200 !
3 tens
10*20 = 200
20
20
Because that is how addition is defined. One lot of tens and no units added to one lot of tens and no units makes two lots of tens and no units.