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Class 8 (Foundation)
Adding & subtracting decimals word problem
CCSS.Math:
Let's get fancy and practice adding and subtracting decimals in the same word problem. Created by Sal Khan and Monterey Institute for Technology and Education.
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thank you for this great video it really helped! is there more videos on other math problems?(1 vote)
way to easy, can you make it more chalinging(1 vote)- how are you doing with the math poblem?(1 vote)
This is not the type of decimals that I'm doing I can't find a video on this type of
subtracting decimals!(1 vote)
There is no difference on this it's just like your adding but with a decimal(1 vote)
what is the hardest problems you have solved(1 vote)
hey guys quandale dingle here my goofy ahh uncle is holding me captive AAAH My friend barnacle jones junior was hit with a rhinoceros horn because he was listening to no maidens(1 vote)
Okay. So I tried this problem the same way, but I got a whole different answer. So, did I do something wrong?(1 vote)
how do i solve proportion problems(1 vote)
There are two ways to solve proportion problems, you can cross multiply the problems or multiply the top and the bottom(1 vote)
So he has $5097.58 left after he depsoits and withdraws.(1 vote)
yes he does in the end.(1 vote)
Video transcript
Leo has $4,522.08 in
his bank account. He deposits another
$875.50 and then withdraws $300 in cash. How much is left
in his account? So he's starting
with $4,522.08. Let's write that down. $4,522.08. And then he deposits, or he
adds, another $875.50. So he's going to add $875.50. When you deposit into an
account, you're putting something into the account, or
you're adding to the account. So after he adds that $875.50,
what does he have? We go back to the penny spot,
or we could view that as the hundredths. A penny is one hundredth
of a dollar. Let me switch colors. We have 8 plus 0 is 8. 0 plus 5 is 5. We have the decimal
right there. 2 plus 5 is 7. 2 plus 7 is 9. 5 plus 8 is 13. Put the 3 down here and regroup
the 1, or carry the 1. 1 plus 4 is 5. So after the $875.50 deposit,
he has $5,397.58. Then he withdraws $300 in cash,
or he takes out $300, so we'll have to subtract that. So then he withdraws $300 and
I just added some trailing zeroes after the decimal. $300 is the same thing as
$300.00 and zero cents. And then we subtract. 8 minus 0 is 8. 5 minus 0 is 5. We have our decimal
right there. 7 minus 0 is 7. 9 minus 0 is 9. 3 minus 3 is 0, and then 5
minus nothing here is 5. So he's the left with, in
his account, $5,097.58.