Transcript Comparing Numbers

PSSA Survivor – Math Outwit Lesson
COMPARING NUMBERS
YOU WOULD WANT TO PUT NUMBERS IN ORDER
WHEN
comparing grades
 placing events in date order
 comparing the cost of two or more objects

HOW DO WE COMPARE NUMBERS?
If the numbers are all integers (numbers
without decimals), we just place them in order.
 However, most likely the numbers we will have
to place in order will be either decimals,
fractions, or a combination of both.
 Therefore, we will look into all three scenarios.

SCENARIO #1 – ALL DECIMAL VALUES
Step 1: Line up the decimal points of each
number
 Step 2: Make sure there are the same number
of decimal places for each number
 Step 3: Compare each digit from left to right
until a difference is found

EXAMPLE




Place 3.498, 3.49, 3.4892, and 3.4981 in order from
least to greatest
Step 1
3.498
3.49
3.4892
3.4981
Step 2
3.4980
3.4900
3.4892
3.4981
Step 3
3.4892, 3.49, 3.4980, 3.4981
SCENARIO #2 – ALL FRACTIONS
Step 1: Change everything to a decimal (use
division of the top number by the bottom
number)
 Step 2: Follow steps from the all decimals
directions

EXAMPLE
Order
 Step 1:
 Step 2:

Answer:
from least to greatest
.25
.66….
.50
.16….
SCENARIO #3 – A MIX BAG
Step 1: Change the fractions to decimals
 Step 2: Follow the rules to decimals

EXAMPLE
Order
 Step 1:
 Step 2:

Answer:
from least to greatest
5.66
7.00
5.33…