Flashcards in Arithmetic - Fractions Deck (9)

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1

## fraction

### a fraction represents a ratio or division of two numbers

2

## numerator

### a/b a is the numerator

3

## denominator

### a/b b is the denominator

4

## mixed number

###
a mixed number consists of a whole number and a fraction

Example: 7¼

5

## adding fractions

###
write the sum of the denominators over the product of the denominators

Example: 1/15 + 1/16

15 + 16 = 31

15 x 16 = 240

31/240

6

## subtracting fractions

###
write the difference between the denominators over the product of the denominators

Example: 1/9 - 1/7

9 - 7 = 2

9 x 7 = 63

2/63

7

## subtracting mixed numbers

###
Example: 5 5/7 - 2 ⅓

first subtract the whole numbers

5 - 2 = 3

then multiply the numerator of the first expression with the denominator of the second expression and vice versa and subtract

15 - 7 = 8

multiply the denominators to get the denominator value

7 x 3 = 21

3 8/21

8

## multiplying fractions

###
multiply the numerators and divide the result by the product of their denominators

Example: 4/5 x ⅔

8/15

9