Adding and Converting Fractions

This video tutorial explains how to add two fractions with different denominators, specifically when one denominator is 10 and the other is 100. The process involves converting fractions to have a common denominator by multiplying the numerator and denominator by 10. The video provides step-by-step examples, demonstrating how to add the numerators while keeping the denominator the same. It also addresses potential pitfalls and offers tips for handling tricky fractions. The tutorial concludes with a summary of the key steps in adding fractions with different denominators.

What must be true about the denominators of two fractions before you can add them together?

• They must be different.

• They must be the same.

• One must be larger than the other.

• They must both be prime numbers.

How can you convert a fraction with a denominator of 10 to a fraction with a denominator of 100?

• Divide both the numerator and denominator by 10.

• Multiply both the numerator and denominator by 10.

• Add 90 to the numerator.

• Subtract 10 from the denominator.

What is the result of adding 40/100 and 57/100?

• 117/100

• 107/100

• 97/100

• 87/100

When adding fractions, what happens to the denominators?

• They remain the same.

• They are multiplied together.

• They are subtracted from each other.

• They are added together.

What is the sum of 30/100 and 16/100?

• 36/100

• 46/100

• 56/100

• 66/100

In the example of adding 90/100 and 8/100, what is the resulting fraction?

• 98/100

• 88/100

• 108/100

• 118/100

What is the result of adding 20/100 and 64/100?

• 104/100

• 94/100

• 84/100

• 74/100

Why is it important to convert fractions to have a common denominator before adding them?

• To simplify the fractions.

• To make the denominators equal zero.

• To make the fractions larger.

• To ensure the numerators can be added directly.

What is the first step in adding fractions with different denominators?

• Add the numerators directly.

• Convert the fractions to have a common denominator.

• Subtract the smaller denominator from the larger one.

• Multiply the numerators together.

If you have a fraction with a denominator of 10, what should you multiply by to convert it to a denominator of 100?

• 10

• 5

• 20

• 15