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Practicing with Two-Digit Numbers
Free lesson for 1st grade math

These are example exercises that help children learn two-digit numbers and place value with tens and ones in grade 1.

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 = ______

 
             

b.  28 + 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?



Copyright Maria Miller. Posted at www.HomeschoolMath.net with permission.




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