Grade 4 - Progress in Mathematics

Estimate the sum. Use front-end estimation.

9. 3
   
   1
   3
   10.^5
   

3

4 
 11.^2 

1

6 
 12.^9 

1

4 
 13.^8 

2

9 


4 


4

6 
^9 

1

8 
^8 
 1

4

0 
^4 

1

2 
^4 

5

6 


 07 


1

9 
 ^06 

1

4 
 ^06 
 1

9

0 
 ^04 
 1

3

2 
 ^07 

1

3 

14. 10
    1
    4
    0
    15.^7
    

3

4 
 16.^14 

2

3 
 17.^24 
 1

2

0 
 18.^15 

1

8 


8 
^15 
 12 
^14 
 10 
^16 
 16 
 18 
 0 25 
^78 

 10 
 11 
 0  01 
^14 
  12 
^29 
  10 
^15 
  06 
^14 

Estimate the difference. Use front-end estimation.

19. 18
    ^23
    20. 9
    ^34
    21. 13
    ^15
    22. 7
    ^12
    23. 11
    ^69
    

 09 


6

9 
 ^07 

4

8 
 ^08 
 1

5

0 
 ^04 

3

4 
 ^05 

1

6 

24. 15
    1
    8
    2
    25.^6
    

7

8 
 26.^14 
 1

8

0 
 27.^13 

1

2 
 28.^12 

5

6 


 08 


2

3 
 ^03 

3

4 
 ^07 

4

5 
 ^06 
 1

6

2 
 ^04 

1

3 

29. 22
    ^39
     12
    ^23
    30. 48
    ^12
     30
    170
    31. 19
    ^11
    ^12  11
    ^34
    32. 25
    172
     15
    ^46
    


30. David brought 5
    120
    lb of potato 34. Jerry traveled 15
    ^34
    mi to get
    salad to the picnic. Sue to the picnic. Emmy traveled
    brought 7
    ^12
    lb of potato salad. 6
    ^12
    mi less. About how far did
    About how many pounds of Emmy have to travel?
    potato salad were there?


31. Nan brought a watermelon
    that weighed 20
    
    1
    4
    lb. The
    picnickers ate 15
    
    3
    4
    lb of
    watermelon. About how many
    pounds of watermelon were left?
    36. Sal needed 37 lb of turkey
    to feed the picnickers. He
    bought turkeys that weighed
    10
    1
    7
    0
    lb, 16
    1

1

0 
lb, and 11
 1

3

0 
lb.

Did Sal buy enough turkey?

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