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We need to add 7.056
to 605.7 to 5.67.
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Now when you're adding any
number, you always want to
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make sure you line up numbers
in the same place.
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And especially when you're
dealing with decimals, the
-
easiest way to do that is to
just line up the decimals.
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So let's do that.
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So the first number right
here is 7,056.
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This second number right
here is 605.7.
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And then this last
number is 5.67.
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So now we have everything
lined up.
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Everything that's in the ones
place is below or above
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everything else in
the ones place.
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Everything in the tenths place
is below or above everything
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else in the tenths place,
and so on and so forth.
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So we can add.
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So let's add it.
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So you want to start off
in the smallest place.
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So you start off here.
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This is the tenths, hundredths,
thousandths place.
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This is literally 6 thousandths,
and you want to
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add it to the other
thousandths.
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There aren't any other
thousandths.
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So you can view it two ways.
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You can just bring in this 6
down, or you could view this
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605.7 as the same thing
as 605.700.
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You can add as many zeroes to
the right of this decimal, to
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the right of the 7, as you want,
since we're sitting on
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the right side of the decimal,
without changing its value.
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You can also do it here.
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This 5.67, you can write
it as 5.670.
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When you write it like
this, and you have 6
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plus 0 plus 0 is 6.
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And you keep going.
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5 plus 0 plus 7 is 12.
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You write the 2 in the
hundredths place,
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and carry the 1.
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1 plus 0 plus 7 is
8, plus 6 is 14.
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Write the 4, regroup the
1 into the ones place.
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1 plus 7 is 8.
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8 plus 5 is 13.
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13 plus 5 is 18.
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This is 18.
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Carry or regroup the 1.
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1 plus 0 is just 1.
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And then finally.
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You have the 6 in the
hundreds place.
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Nothing gets added to it, so you
can just bring down that 6
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and it's right there.
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And you don't want to
forget the decimal.
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And so when you add the numbers
you get 618.426, or
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618 and 426 thousandths.
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And we're done.