Currency conversion word problem | 4th grade | Khan Academy


Dennis is vacationingin China and wants to spend $30 on a new sweater.

The sweater he likescosts 197 Chinese yuan.

One US dollar can beconverted into 6 Chinese yuan.

Dennis will have blank Chineseyuan if he converts his $30.

Well, let's think about this.

He's going to take $30,and the conversion rate is 6 yuan per dollar.

So he's going to have $30times 6 yuan per dollar.

So he's going tohave 30 times 6 yuan.

And 30 times 6, well, that's thesame thing as 3 times 6 times 10, or 180.

So he's going to havea 180 Chinese yuan.

Now does he have enoughmoney to buy the sweater? Well, the sweater cost 197 yuan.

So no, he does not have enoughmoney to buy the sweater.

Source: Youtube

Currency conversion word problem | 4th grade | Khan Academy

One day you'll travel to another country and need to know if you have enough money to buy a souvenir in their currency.

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Grade 4th on Khan Academy: 4th grade is the time to start really fine-tuning your arithmetic skills. Not only will you be a multi-digit addition and subtraction rockstar, but you'll extend the multiplication and division that you started in 3rd grade to several digits. You'll also discover that you sometimes have something left over (called a "remainder") when you divide. In 3rd grade you learned what a fraction is. Now you'll start adding, subtracting, multiplying, and comparing them. You'll also see how they relate to decimals. On other fronts, you'll learn how to convert between different units (which is super important when comparing the size and speed of robot unicorns in different countries) and continue your journey thinking about various shapes in two dimensions. Some of the foundational concepts of geometry (like lines, rays and angles) also get introduced. As always, we'll round this out with a healthy dose of applied word problems and explorations of number patterns and properties (including the ideas of factors, multiples and prime numbers). The fun must not stop! (Content was selected for this grade level based on a typical curriculum in the United States.)

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