Grade 4 - Progress in Mathematics

29. Tyrone put together 62 boxes 30. Mill Farms donated 85 turkeys
    of canned food. There were to soup kitchens. Each turkey
    45 cans in each box. How weighed 25 pounds. How many
    many cans of food were there? pounds of turkey were donated?


30. How does knowing how to
    multiply by tens help you
    multiply a 2-digit number by
    another 2-digit number?
    Write your answer in your
    Math Journal.

Use rounding to estimate. Then multiply.

1. 21 2. 36 3. 42 4. 57 5. 73
   
   46
   18
   62
   19
   31


2. 64 7. 83 8. 56 9. 29 10. 48
   
   39
   44
   92
   75
   99


3. $ .49 12. $ .67 13. $ .99 14. $ .53 15. $ .35
   
   32
   58
   64
   28
   76


4. 95
   76 17. 39
   55 18. 47
   63 19. 25
   92


5. 16
   52 21. 28
   82 22. 34
   93 23. 71
   37


6. 15
   $ .94 25. 34
   $ .92 26. 85
   $ .55 27. 26
   $ .78

Find each product. Describe any pattern you see.

28. 12 12 12 12 12 12 12
    
    6
    7
    8
    9
    10
    11
    12

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