A fraction represents a part of a whole and is expressed as $$\frac{a}{b}$$ , where 'a' is the numerator and 'b' is the denominator.

How do you convert $$\frac{5}{7}$$ to have a denominator of 21?

Multiply the numerator and denominator by 3: $$\frac{5 \times 3}{7 \times 3} = \frac{15}{21}$$ .

How do you convert $$-\frac{1}{3}$$ to have a denominator of 21?

Multiply the numerator and denominator by 7: $$-\frac{1 \times 7}{3 \times 7} = -\frac{7}{21}$$ .

What is $$\frac{15}{21} + -\frac{7}{21}$$ ?

$$\frac{15 - 7}{21} = \frac{8}{21}$$ .

What is the result of $$\frac{3}{5} - \frac{1}{6}$$ ?

The result is $$\frac{13}{30}$$ .

How do you subtract $$\frac{3}{5} - \frac{1}{6}$$ ?

Find a common denominator (30), convert both fractions, then subtract: $$\frac{18}{30} - \frac{5}{30} = \frac{13}{30}$$ .

What is a mixed number?

A mixed number is a whole number combined with a fraction, such as $$6 \frac{1}{2}$$ .

How do you add mixed numbers like $$6 \frac{1}{2} + -1 \frac{1}{3}$$ ?

Convert mixed numbers to improper fractions, find a common denominator, and then add.

What is the result of $$\frac{13}{2} + -\frac{4}{3}$$ ?

The result is $$5 \frac{1}{6}$$ .

What do you do when you see a negative sign in front of a fraction?

The negative sign indicates that the value of the fraction is below zero.

Fractions with Negatives - Review 1 adding and subtracting Flashcards

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a fraction?

Back

2.

FLASHCARD QUESTION

Front

How do you add fractions with different signs?

Back

When adding fractions with different signs, you subtract the absolute values and take the sign of the larger absolute value.

3.

FLASHCARD QUESTION

Front

Back

Find a common denominator for the fractions.

4.

FLASHCARD QUESTION

Front

Back

The common denominator is 21.

5.

FLASHCARD QUESTION

Front

Back

6.

FLASHCARD QUESTION

Front

Back

7.

FLASHCARD QUESTION

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Back

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