Transcript Decimal Dribbles

Solving the Decimal
Mystery
Who knows how
to put words in
ABC order?
See if you can put these
words in ABC order
•Heat
•Hear
•Heart
•Heap
•Heap
•Hear
•Heart
•Heat
Well, guess what?
Decimals work
the same way!
1.97
2.78
4.3
5.6
8.92
7.63
5.2
If you use the ABC order method,
which decimal is larger?
1.86
or
1.68
Try comparing the numbers.
1.86
1.68
They both
have a 1
in the
ones place.
Now what?
1.86
1.68
In the tenths
place, one
decimal has an 8
and one has a 6.
Which would you
say is the
bigger decimal?
Of Course! You’re Right!
Since 8 is bigger than 6…
1.86
is bigger
Than
1.68!
Now try it this way!
You can also put decimals in order
using the money method.
Think:
Which would you rather have?
$1.68
Or
$1.86
Absolutely!
$1.86 is
more money
than $1.68
so it must
be a bigger decimal…
Let’s see you try these decimals…
Which is the smaller decimal?
Hint: Think ABC order
or which is less money
1.25
Or
1.15
Which is the smaller decimal?
1.25
Or
1.15
They both
have
a 1 in the
ones place.
Which is the smaller decimal?
1.25
Or
1.15
One decimal has a 2
in the tenths place
and one has a 1
in the tenths place.
Since 1 is less than 2…
1.15 is less than 1.25.
Are you ready
for some
harder problems?
Now you try it.
Put each group of decimals in order
from the least to the greatest
You can use the ABC method
or the money method.
3.78
3.75
3.67
4.56
5.46
4.65
8.29
8.93
8.92
Did you get these answers?
3.67
3.75
3.78
4.56
4.65
5.46
8.29
8.92
8.93
GRRReat!
Now try this…order these numbers
from least to greatest!
7.89
8.97
7.98
8.79
7.88
9.87
You can do it!
Think ABC or $.
Let’s see how you did…
I knew Keep
you could It Almost
do it! Up!
finished!
7.88
7.89
7.98
Good
Start!
8.79
8.97
You’ve
9.87
Halfway
really
There!
got it
now!
You really are becoming
a decimal expert!
Now we can go
to the computer lab
and practice ordering decimals
using this site:
http://www.aaamath.com/B/g52_cox1.htm