6th Grade Math Textbook, Progress

Estimate by rounding. Then find the difference.

Align and estimate by rounding. Then find the difference.

9. 0.91
   0.745 10. 0.9158
   0.7444 11. 8
   2.04735


10. 7,106,009
    248,310 13. 20,700.675
    700.775 14. 1
    0.3856


11. $1,012,481.37
    926,399.76 16. 5,391,602,140
    4,387,899,000

403.0078


 86.25

596,081,009


574,116,025

12.80765


 9.6153

23,594,550


 7,008,142

5,034,012


 316,948

$856,079


 622,003

2.3004


0.1544

0.586


0.492

The table shows online sales totals for 2004 and 2005.

Use the table to answer exercises 17–19.

17. What is the difference in sporting
    goods sales from 2004 to 2005?


18. Which type of merchandise had a
    greater sales difference between
    2004 and 2005?


19. Which year had greater total
    sales, 2004 or 2005? Explain
    how you know.

Compute mentally.

20. 1286
    1000 21. 0.98
    0.08 22.0.98
    0.9


21. 14,500
    1500 24. 7
    0.5 25.15.75
    4.25


22. 0.525
    0.5 27.262,000
    42,000 28. 242
    0.75

Total Online Sales: 2004 vs. 2005

Merchandise 2004 2005

Books and

Magazines

Music and

Videos

Sporting

Goods

Toys and

Games

$1,961,000

$1,598,000

$1,031,000

$1,321,000

$2,143,000

$1,733,000

$1,155,000

$1,638,000

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