Comparing and ordering rational numbers

Comparing and ordering rational numbers

who is better, bigger, stronger??

Which is greater,7/9   or 2/9   ?

• when fractions have the same denominator

• we compare the numeratos

symbols

• bigger than >

• smaller than <

Multiple Select

Compare 2/7 ...... 6/7

• >

• <

• =

if fractions have different denominator

• you can express them with common denominator

• convert them to decimal

• cross product

ask me

if you have any doubts!!

Multiple Select

compare 7/9 .... 5/8

• <

• >

• =

Multiple Select

compare 5/6 .... 7/8

• =

• <

• >

You have to be careful when comparing negative fractions. 

• Remember than in negative numbers the "greater value" is the smallet number

• -8 is smaller than -2

• If using cross product method, assign the sign to the numerator.

Multiple Select

compare -2/5 .... -3/7

• >

• =

• <

Multiple Select

compare -6/8 ... -5/7

• <

• >

• =

To compare decimals

• line up the decimal points compare digits from left to right until you find the place where the digits are different.

• compare digits from left to right until you find the place where the digits are different.

Multiple Select

compare 0.535 ... 0.538

• >

• <

• =

Multiple Select

compare -0.52 ... -0.522

• >

• <

• =

Rational numbers

• can be expressed as fractions

• can be expressed as decimals

• when comparing them or ordering them, use the same expression ( it will be easier)

Multiple Choice

Order from least to greatest: 4/5, 0.93, and 0.9

• 4/5, 0.93, 0.9

• 0.93, 4/5, 0.9

• 4/5, 0.9, 0.93

• 0.93, 0.9, 4/5

Multiple Choice

order from least to greatest: 3/5, 0.84, 0.7

• 3/5, 0.84, 0.7

• 3/5, 0.7, 0.84

• 0.84, 3/5, 0.7

• 0.84, 0.7, 3/5