fractions

parts of a WHOLE

Created by:C. Horejsi

Fractions

orth

own

of a

Dividing a whole to make fractions:

1

1/2

1/4 1/81/16

1/32

1/641/128

1/256

Smaller

& smaller

9 parts = 1 whole

9/9 = 1 9 out of 9 parts are shaded

A Dozen =12

1/3 of a dozen = 4

3)124 2/3 of a dozen is 8

A Dozen Donuts

If you ate ¼ (one-fourth) dozen donuts, then you ate 3.

¼ means you divide the whole amount into 4 groups

4)12

3

Comparing Fractions

If the numerator is 1 on the fractions, then compare the denominators:

1 1 1 2 4 8

0ne-half is larger than one-fourth and one-fourth is larger than one-eighth.

Draw Pictures

Which fraction is larger? 5 8 6 or 9

Shade the parts of each fraction and compare !

Use the “Butterfly”

Which fraction is larger?

5 7 6 9

Multiply 6 x 7 and write the product above the 7, then multiply 9 x 5 and write that product above the 5. Compare the products; which one is the largest number? 45 is larger than 42, so 5/6 is larger than 7/9.

4245

Adding Fractions

If the denominator is the same; then add the numerators.

2 3 5

7 7 7=+

Improper FractionsTop Heavy :

Numerator is larger than the denominator:

9 4

two and one-fourth2 ¼

Improper Fractions

Numerator is larger than the denominator:

9 4

Divide the numerator by

the denominator:2 ¼

4) 9-81

Remainder 1 is used in the quotient as a fraction. The remainder goes over the divisor to make ¼.

Improper Fractions

Numerator is larger than the denominator:

9 4

Easy way to remember which number goes where!

2 ¼

4) 9-81

The cowboy rides the horse!

The cowboy goes into the house.

The horse stays outside the house.