I remember when I was little I use to play with the 3-D little cubes called units, the rods of 5 units together called longs, and the big square made up of 5 longs, or 25 units, and we would use them to add and subtract with Base 5 Thinking back, it has had to have been at least over 12 years ago. I loved to make little piles or stack them up one on top of another. We would do various games that taught us math without even realizing it. Writing numbers down on a paper and using visuals are completely different.
When adding with Base 5 you cannot have over 5 or more unit pieces because you are able to switch every 5 units for a long and every 5 longs for a flat. And when subtracting with base 5, you will need to do more exchanging, exchanging the higher numbers such as flats in to longs in to units or until you get what ever number you need to satisfy. You can also use money instead because while adding or subtracting money, you can exchange little coins values or larger ones or bills and while you subtract you take the bills and break them in to coin values.
When adding with Base 5 you cannot have over 5 or more unit pieces because you are able to switch every 5 units for a long and every 5 longs for a flat. And when subtracting with base 5, you will need to do more exchanging, exchanging the higher numbers such as flats in to longs in to units or until you get what ever number you need to satisfy. You can also use money instead because while adding or subtracting money, you can exchange little coins values or larger ones or bills and while you subtract you take the bills and break them in to coin values.
Using money is a good example of working with base 5 ... with nickels, quarters, or in exchanging 5's to 1's.
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