BÀI 22 : Convert Mixed Numbers to Improper Fractions – đổi hỗ số sang phân số không thực sự

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Converting mixed numbers to improper fraction .

Let 's try and convert one and three fourths to an improper fraction.

Let 's represent this in the form of squares .

Now  let's try representing the squares as a fraction .

Counter  the scraps.

There  are seven fourths that is 7 over 4.

So  1 and 3 fourths equals seven folds.

To change a mixed number into an improper fraction .

Multiply  the old number by the denominator.

And  add it to the numerator of the fractional part.

Let 's do one more and this time without the help of any squares or pictures .

Let 's change 2 and five sixths to an improper fraction.

First multiply 2 by 6 that is multiply the whole number by the denominator .

Then  add it to the numerator of the fractional part which is five.

Hence  17 becomes our new numerator .

The  denominator remains the same which is six .

Hence  our improper fraction becomes  17 / 6.

Let 's look at one more example.

Six  and a half .

So  it is  6 x 2 plus 1 equals 30.

Denominator  remains too.

Hence  the improper fraction is 13 by 2 .

Did n't I tell you it was easy.

Now  let's look at..

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