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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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Toán 5 - Tiết 6 How to convert a Fraction to a Decimal manually PDF Print E-mail

Toán 5 - Tiết 6  How to convert a Fraction to a Decimal manually

How to convert a Fraction to a Decimal manually, follow these steps: Step 1: - Find a number you can multiply by the bottom of the fraction to make it 10, or 100, or 1000, or any 1 followed by 0s.
Step 2: -  Multiply both top and bottom by that number.
Step 3. -
Then write down just the top number, putting the decimal point in the correct spot (one space from the right hand side for every zero in the bottom number)

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Toán 5 - Tiết 5 How to teach Decimal Fractions PDF Print E-mail

Bài giảng Toán 5 - Tiết 5 - Phân số Thập phân - How to teach Decimal Fractions

Students are given a worksheet with a large circle drawn on it. They imagine that the circle is the top view of a round chocolate cake (or pizza base) which they have to share between five people.
Teacher Ask: How would you cut the cake so you have ten equal pieces and none left over?

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Toán 5 - Tiết 4 - Practice comparing fractions PDF Print E-mail

Bài giảng Toán 5 - Tiết 4 - Ôn tập so sánh hai  phân số - Practice  comparing fractions

These fractions have unlike denominators (and unlike numerators). It would be easier to compare them if they had like denominators. We need to convert ( quy đồng mẫu số )  these fractions to equivalent fractions with a common denominator in order to compare them more easily.

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Toán 5 - Tiết 3 - How to teach comparing fractions PDF Print E-mail

Bài giảng Toán 5 - Tiết 3 - Ôn tập so sánh hai  phân số - How to teach comparing fractions-

-Drake rode his bike for three-fourths of a mile and Josh rode his bike for one-fourth of a mile. Which boy rode his bike farther?         
Analysis:     3/4 ...1/4
These fractions have like denominators, so we can compare the numerators.     
Solution:     3/4 >.1/4

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