Video Transcript
Calculate 79.529 plus
10.623.
So in this question, what we’re
going to be doing is adding two decimals. And we know that because we’ve
got decimal points here, which are the little points between our unit and then
our tenths. And whenever we’re adding
decimals, the best method to use is the column method. But when we’re using the column
method, we need to make sure that each of our place values are lined up
evenly. And we must also make sure that
our decimal points are also aligned. So we can see that we’ve done
that, so we’ve got our 79.529 plus 10.623.
So what we do, as with any
column addition, is start from the right-hand side. So in this case, we’re gonna be
adding our thousandths. So we’ve got nine plus three,
which is 12. So we put two underneath the
line and then carry the one into the next place value. Then, we have two add two add
the one we carried gives us five. Then, we have five add six,
which is 11. So once again, we put one in
that place value and we carry one to the next place value. Then, next, what we do is we
put in our decimal point, which again must be aligned with the two above. So now, we’ve got nine add
zero, but then we add the one we carried. So this gives us 10, so we
carry one once again. Then, finally, we’ve got seven
add one add the one we carried gives us nine. So we’ve got 90.152. So therefore, we can say that
79.529 plus 10.623 is 90.152.
