Grade 4 - Progress in Mathematics

Use a strategy you have learned.

29. Nan had 7 jacks. Then she
    bought some packs with 6
    jacks in each pack. Nan
    now has 55 jacks. How
    many packs did she buy?

Solve. Explain how you

solved the problem and which

multiplication property you used.

30. 4
    (5 6)

Find the product.

1. 3
   21 2. 7
   20 3. 4
   59 4. 8
   47


2. 6
   $10.31 6. 5
   360 7. 3
   $ 2.29 8. 9
   5473


3. 10
   77 10. 90
   80 11. 50
   26 12. 10
   133

Choose a method to estimate. Then multiply.

13. 
    16 14.
    54 15.
    43 16.
    60
    
    39
    97
    21
    39


14. $28.58 18.
    307 19.
    442 20.
    590
    
    4
    85
    36
    73


15. 
    3127 22.
    $ 81.99 23.
    6215 24.
    4356
    
    5
    2
    9
    4


16. 
    $ 5.50 26.
    $ 3.25 27.
    $ 1.52 28.
    $ 3.07
    
    18
    37
    20
    45

Use mental math to find each product. Then draw

base ten blocks to check each answer.

31. 8
    10 32. 3
    50 33. 2
    20

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