How to represent
numbers using “quick
hundreds” “quick tens”
and “quick ones”
Unit 3 Math Expressions
Place value is where a digit is
placed in a whole number. Each
digit has a specific “value” or
amount depending on where the
digit is (ones’ place, tens’ place,
hundreds’ place).
Numbers, such as 84, have two
digits. Each digit is a different
place value.
The left digit is the tens' place. It
tells you that there are 8 tens.
The last or right digit is the ones'
place which is 4 in this
example. Therefore, there are 8 sets
of 10, plus 4 ones in the number 84.
84
tens' place
ones' place
Another example…
65
“6” is in the tens’ place. “5” is in the ones’
place.
Let’s see a bigger number…
142
“1” is in the hundreds’ place.
“4” is in the tens’ place. “2” is
in the ones’ place.
How could you draw different
numbers with pictures?
If your teacher asked you to draw the
number 143- would you want to
draw 143 different objects? That
would take a long time! There is an
easier way to do this. 
How many circles do you see?
ONE!
Each circle stands for one of something
How many circles do you see
now?
10
How can we show the number ten without
drawing 10 circles?
A ten can be shown with a simple
line.
Here are 100
Circles. How
can I
draw the
number 100
without
having to
draw 100 of
something?
There are 10
groups of 10.
We can draw a box
around the 100
circles.
Let’s show the number 65…
Let’s show the number 142…
100 + 40 + 2
Your turn…
You will need to decide how to best say
or draw the number that is shown…