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did you know that you use addition all
the time when you put money into your
bank account you're adding to your
balance at the grocery store you add
items to your cart when you add you're
combining two or more numbers to get a
larger number
this larger number is called the sum for
example if you already have three lemons
and you go to the store and buy two more
you now have five lemons you can write
this as three plus two equals five the
plus sign is used when you add when
you're adding be sure to keep place
values of mind place values determine
the way you read and write a number
let's look at the number 632 the two is
in the ones place the three is in the
tens place and the six is in the
hundreds place an easy way to add
numbers is to stack them according to
their place values
if you want to add 12 and three first
act twelve the larger of the two numbers
on top of three notice that the ones
positions for each of the two numbers
are lined up vertically place a plus
sign on the left of the stack and draw a
line at the bottom now you're ready to
add three plus two is five
so put a five below the line the one in
the tens place has nothing to combine
with so bring the one down below the
line the answer or sum is 15 and those
are the basics of addition like what you
just saw radix
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