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Practicing with Two-Digit Numbers

1. Fill in.

a. ____________________________  

 

______ + _____

tens ones
     

b. ____________________________  

 


 

______ + _____

tens ones
     

c. ____________________________  

 

______ + _____

tens ones
     

d. ____________________________  

 

______ + _____

tens ones
     

2. Add a ten by drawing another ten-column. Subtract a ten by crossing out a ten-column.

 
   

a.  43 + 10 = ______

 
             

b28 + 10 = ______


         

c.  56 − 10 = ______

3. Explain to your teacher how you add a ten to a number, or subtract a ten.

a.  61 + 10 = ______

    61 − 10 = ______

b.  37 + 10 = ______

    37 − 10 = ______

c.  89 + 10 = ______

    89 − 10 = ______



4. Match the number to its name.

16

60

23

32

76

14

12

twelve

fourteen

sixteen

thirty-two

sixty

twenty-three

seventy-six

90

29

11

19

91

39

93

eleven

nineteen

ninety-three

ninety-one

twenty-nine

thirty-nine

ninety

5. Write each number as (tens) + (ones).

a.  91 = _____ + _____ b.  79 = _____ + _____

c.  58 = _____ + _____

6. Add.

a.  20 + 6  =  _______

    80 + 2  =  _______

b.  60 + 7  =  _______

    10 + 1  =  _______

c.  6 + 50 =  _______

    5 + 30  =  _______

7. Fill in. 


 

I'm between 84 and 92. I don't
have any ones.
Who am I?


This lesson is taken from Maria Miller's book Math Mammoth Place Value 1, and posted at www.HomeschoolMath.net with permission from the author. Copyright © Maria Miller.


Math Mammoth Place Value 1

A self-teaching worktext for 1st grade that covers forming ten-groups, filling the 100-chart, breaking numbers to tens & ones, and comparing.

Download ($3.30). Also available as a printed copy.

=> Learn more and see the free samples!

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