Convert $$\frac{2}{7}$$ to a fraction with a denominator of 70.

$$\frac{2}{7} = \frac{20}{70}$$ .

Convert $$\frac{6}{10}$$ to a fraction with a denominator of 70.

$$\frac{6}{10} = \frac{42}{70}$$ .

What is the sum of $$\frac{20}{70}$$ and $$\frac{42}{70}$$ ?

$$\frac{20}{70} + \frac{42}{70} = \frac{62}{70} = \frac{31}{35}$$ .

What is the first step in adding $$\frac{1}{6}$$ and $$\frac{6}{11}$$ ?

Find the LCM of 6 and 11, which is 66.

Convert $$\frac{1}{6}$$ to a fraction with a denominator of 66.

$$\frac{1}{6} = \frac{11}{66}$$ .

Convert $$\frac{6}{11}$$ to a fraction with a denominator of 66.

$$\frac{6}{11} = \frac{36}{66}$$ .

What is the sum of $$\frac{11}{66}$$ and $$\frac{36}{66}$$ ?

$$\frac{11}{66} + \frac{36}{66} = \frac{47}{66}$$ .

What is the sum of $$\frac{3}{5}$$ and $$\frac{3}{8}$$ ?

First, find the LCM of 5 and 8, which is 40. Then convert both fractions: $$\frac{3}{5} = \frac{24}{40}$$ and $$\frac{3}{8} = \frac{15}{40}$$ . The sum is $$\frac{39}{40}$$ .

What is the sum of $$\frac{2}{7}$$ and $$\frac{1}{4}$$ ?

First, find the LCM of 7 and 4, which is 28. Convert both fractions: $$\frac{2}{7} = \frac{8}{28}$$ and $$\frac{1}{4} = \frac{7}{28}$$ . The sum is $$\frac{15}{28}$$ .

What is the sum of $$\frac{1}{11}$$ and $$\frac{2}{12}$$ ?

First, find the LCM of 11 and 12, which is 132. Convert both fractions: $$\frac{1}{11} = \frac{12}{132}$$ and $$\frac{2}{12} = \frac{22}{132}$$ . The sum is $$\frac{34}{132} = \frac{17}{66}$$ .

Adding Fractions with Unlike Denominators (Probe 5) Flashcards

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a fraction?

Back

A fraction represents a part of a whole and consists of a numerator (top number) and a denominator (bottom number).

2.

FLASHCARD QUESTION

Front

What does it mean to have unlike denominators in fractions?

Back

3.

FLASHCARD QUESTION

Front

How do you add fractions with unlike denominators?

Back

To add fractions with unlike denominators, first find a common denominator, convert each fraction to an equivalent fraction with that denominator, and then add the numerators.

4.

FLASHCARD QUESTION

Front

What is the least common multiple (LCM)?

Back

The least common multiple (LCM) is the smallest multiple that two or more numbers share. It is used to find a common denominator for adding fractions.

5.

FLASHCARD QUESTION

Front

Find the LCM of 7 and 10.

Back

The LCM of 7 and 10 is 70.

6.

FLASHCARD QUESTION

Front

Back

7.

FLASHCARD QUESTION

Front

Back

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