6th Grade Math Textbook, Progress

Estimate the sum or difference. Use front-end estimation with adjustments.

1. 
   31.6 2.
   68.7 3.
   7.5 4.
   9.1 5.
   0.87
   18.1
   63.9
   2.9
   3.6
   0.54


2. 
   0.74 7.
   76.67 8.
   16.34 9.
   0.66 10.
   0.84
   
   0.15
   23.89
   44.59
   0.7
   0.59
   69.47 39.07 0.19 0.8

Estimate the sum or difference by rounding.

11. 
    18.1534 12.
    4.8359 13.
    0.45601 14.
    4371.5902
     7.0901
    0.7473 0.06428
    0 127.3246


12. 
    386,002,444 16.
    2.361912 17.
    952.0667 18.
    7.30267
    
    49,624,973
    0.19008 232.608 45.37
    351.03991  0 0.84652

Estimate by rounding each amount to the nearest dollar.

19. 
    $78.34 20.
    $156.39 21.
    $89.96 22.
    $702.66
    
    0 25.29 0000 45.48 000 26.35
    00 55.45
     00 9.87  0 12.59


20. Kathleen has covered 46.75 m in the special
    race. About how much farther must she go to
    complete the 50 m race?


21. During a tour of Europe, Alfredo flew 112.5 km,
    41.8 km, and 109.5 km. Estimate the total
    distance that Alfredo traveled.


22. Juan earned $15.63, $8.95, and $19.82 over a
    3-day period. About how much did he earn?


23. About how much greater is the difference of 325.87
    42.76
    than the sum of 109.5359.87? Explain how you could use
    estimation to get your answer.

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