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Bài giảng Toán 5 - Tiết 11 Luyện tập Hỗn số Practice with mixed fraction PDF Print E-mail

Bài giảng Toán 5 - Tiết 11  Luyện tập Hỗn số Practice with mixed fractions

When to Use Improper Fractions or Mixed Fractions
For everyday use, people understand mixed fractions better:
Example: It is easier to say "I ate 2 1/4 sausages", than "I ate 9/4 sausages"
But for mathematics improper fractions are actually better than mixed fractions.

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Bài giảng Toán 5 - Tiết 10 Hỗn số mixed fraction PDF Print E-mail

Bài giảng Toán 5 - Tiết 10  Hỗn số  mixed fraction

Example: The mixed number, 3 3/5, can be changed to an improper fraction by converting the integer portion to a fraction with the same denominator as the fractional portion and then adding the two fractions. In this case the integer portion (3) is converted to 15/5. The sum of the two fractions becomes 15/5  +  3/5  =   18/5.

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Toán 5 - Tiết 9 Hỗn số Mixed Fractions or Improper Fractions PDF Print E-mail

Bài giảng Toán 5 - Tiết 9  Hỗn số  mixed fraction

You can use either an improper fraction or a mixed fraction to show the same amount.
For example 1 3/4 = 7/4, as shown here:
Converting Mixed Fractions to Improper Fractions
To convert a mixed fraction to an improper fraction, follow these steps:

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Toán 5 - Tiết 8 Practice Multiplying and Dividing Fractions in Math PDF Print E-mail

Toán 5 - Tiết 8 - Ôn tập Phép nhân Phép chia hai phân số  Practice Multiplying and  Dividing Fractions in Math

Divide FractionsTo divide one fraction by another, multiply the first fraction by the inverse of the second fraction (flip the numerator and denomintator of the second fraction).
There are many ways how to teach fractions, and the success or failure of the student to understand fractions will depend on the teaching method used.

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Toán 5 - Tiết 7 Practice Adding and Subtracting Fractions in Math PDF Print E-mail

Toán 5 - Tiết 7  Practice Adding and  Subtracting Fractions in Math

Now that the fractions have the same denominator, add the numerators.  Simple the answer.
To add two or more fractions, first make all the fractions have the same denominator. To do this, find the least common multiple of the two denominators. The Least Common Multiple (LCM) is the smallest number that is a multiple of the two numbers.

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