Grade 4 - Progress in Mathematics

Use a strategy you have learned.

19. Mrs. Lee bought 4 items for
    $ 29.99, $ 17.59, $ 35.79, and
    $ 49.99. How much did she pay?
    If she gave the cashier $ 135.00,
    how much change did she
    receive?

Use front-end digits androunding

to estimate the sum. Explain which

method of estimation gives an

answer closer to the actual sum

and why.

20. 659
    251

Choose a method to estimate. Then add.

1. 509
   45 2. 283
   179 3. 8059
   397


2. 151,209
   348,964 5. 902,651
   48,376


3. 
   176 7.
   374 8.
   $ 78.50 9.
   23,154
   
   205
   162
   .99
   96
   
   387
   51
   5.38
   4,129

Choose a method to estimate. Then subtract.

10. 750  29 11. 5123  99 12. 56,150  3777


11. 8,731,402 5,062,974 14. 9,532,486 983,723


12. 
    5430 16.
    3000 17.
    $ 29.39 18.
    29,126
     298  2951  18.42  8,437


13. List which three money amounts in the boxes have a sum
    of about $73. Use estimation to help.

$ 63.50 $ 1.35 $ 3.75 $ 8.25 $ 58.50

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