Joe Doe (joe_doe_zero) wrote in 0_arithmetic,
Joe Doe
joe_doe_zero
0_arithmetic

Addition

Addition



Now that you know how to count, next we can learn how to do it faster. Let's say we have the number one (1) and we want to add one to it two times. We can do it just by adding two. We have:

1 + 1 + 1 = 1 + 2

1 + 1 = 2 (1 time)
2 + 1 = 3 (2 times)

or

1 + 2 = 3

Let's say we want to add 3 to 5. We have:

3 + 1 = 4 (1 time)
4 + 1 = 5 (2 times)
5 + 1 = 6 (3 times)
6 + 1 = 7 (4 times)
7 + 1 = 8 (5 times)

or

3 + 5 = 8

If we want to add 8 to 5, we have

5 + 1 = 6 (1 time)
6 + 1 = 7 (2 times)
7 + 1 = 8 (3 times)
8 + 1 = 9 (4 times)
9 + 1 = 10 (5 times)
10 + 1 = 11 (6 times)
11 + 1 = 12 (7 times)
12 + 1 = 13 (8 times)

or

5 + 8 = 13

To do this a faster way draw a line and write numerals on it such as this:

0--1--2--3--4--5--6--7--8--9--

Now to add, we start from the starting quantity and move the number of spaces that we are adding by.

To do 3 + 5 we go

0--1--2--3**4**5**6**7**8--9--

To get eight (8).

That is how to do simple addition.
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