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Three-Digit Numbers

Ten ones make a ten: Ten ten-pillars make ONE HUNDRED:


=               

 

=

10 ones

=

10

10 tens 

=

100

Write hundreds, tens, and ones in their own columns:

     

  =   
hund-
reds
tens ones
3 2 7

three hundred twenty-seven

1. Count the ones, tens, and hundreds, and fill in the missing parts.

a. one hundred
one

     

 

hundreds tens ones
  

1

0 1

b. one hundred
six

   

 

hundreds tens ones
  

  

   

c. one hundred
eleven

     
 

 

hundreds tens ones
  

1

1 1

d. one hundred
      thirteen   

     
 

 

hundreds tens ones
  

  

   

e. one hundred
  twenty

     

 

hundreds tens ones
  

 

   

f. one hundred
    twenty-five

     

 

hundreds tens ones
  

  

   

g. one hundred
fifty

     
 

 

hundreds tens ones
  

 

   

h. one hundred
       sixty-two   

     
 

 

hundreds tens ones
  

  

   


2. Count the ones, tens, and hundreds, and fill in the missing parts.

a.    two hundred   

           four         

      

 

hundreds tens ones
  

  2

0 4

b.    two hundred   

        thirteen       

     

 

hundreds tens ones
  

  

   

c.  ___________________

    ___________________

   

 

hundreds tens ones
  

  

   

d.  __________________

    __________________

   
 

 

 H   T   O 
     

e.  __________________

    __________________

      

 

 H   T   O 
     

f.  __________________

    __________________

   

 

 

 H   T   O 
     

g. ________________________________

    

 

 H   T   O 
     

h.   Ten hundreds = One thousand   

  =     

 

 Th   H   T   O 
1 0 0 0


3. Write a sum of the hundreds, tens, and ones shown in the picture.
    Also write the number.

a.        

_____________ + ________ + _____

 H   T   O 
     
b.        
 

_____________ + ________ + _____

 H   T   O 
     
c.        
 

_____________ + ________ + _____

 H   T   O 
     
d.        
 

_____________ + ________ + _____

 H   T   O 
     

Notice: There are NO ones.
Write a zero for ones in the sum.

e.        

_____________ + ________ +     0   

 H   T   O 
     

Notice: There are NO tens.
Write a zero for tens in the sum.

f.     
 

_____________ +     0     + ________

 H   T   O 
     


4. Match the numbers, number names, and the sums to the correct pictures.

118 505 818 550 508 805

 

 
 
 
     
 
 
    
 

 

eight hundred five five hundred fifty one hundred eighteen

 

   
 
 
 
    
 

 

500 + 8 500 + 5 800 + 10 + 8

5. The dots are ones, the pillars are tens. Group together 10 ten-pillars to make a hundred.

a.                     

  235 

b.                         

____________

c.     
 
 
         
       

____________

d.   
          

____________

 

How many tens are in a thousand?




The ideas in this place value lesson are taken from the place value ebook that I sell at MathMammoth.com. Only a few examples of each problem type are shown; you should make more problems of each kind for the student.

Math Mammoth Place Value 2

A self-teaching worktext for 2nd grade that covers hundreds, tens, and ones (three-digit numbers), number charts, skip-counting, comparing, and rounding.

Download $2.25 or Pay What You Want!
Also available as a printed copy.

=> Learn more and see the free samples!

See more topical Math Mammoth books



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