6th Grade Math Textbook, Progress

Estimate by using compatible numbers. Then find each quotient.

1. 52
   6  6  3  8  2. 34
   5  7  7  7  3. 15
   1  6  3  4  4. 40
   2  0  6  0 


2. 36,389
   82 6. 30,139
   93 7. 25,297
   84 8. 72,072
   72


3. 86,129
   43 10. 36,408
   912 11. 2710
   759 12. 88,408
   514

Find the value of the variable.

13. n28,671
    57 14. d14,558
    29 15. 504,144
    36 m


14. 696,024
    24 a 17. c400,458
    186 18. b681,042
    223

Use the table to find the number of carats in each gem. (1 carat 20 centigrams)

19. Cut diamond


20. Ruby


21. Emerald


22. Sapphire


23. Opal

Gem Mass (in centigrams)

Cut diamond 10 600

Ruby 170 000

Emerald (single crystal) 140 500

Sapphire (carved) 46 040

Opal 527 000

24. Arizona’s land area is 113,642 square
    miles and its water area is 364 square
    miles. How many times greater is the
    land area than the water area?
    25. Kansas’s land area is 81,823 square
    miles and its water area is 459 square
    miles. How many times greater is the
    land area than the water area?

Use each statement and the numbers in the box

to write number sentences. Tell whether the

statement is always, sometimes, or nevertrue

for allthe given numbers.

27. The sum is zero. 28. The quotient is zero.


28. The difference is zero. 30. The sum is greater than or equal to 0.


29. On planet NO-LEAP, each year has exactly 365 days.
    EU-2’s father is 14,977 days old. How many days ago
    was his birthday? (Hint: 14,977
    365 ? years days)?

133, 1, 0, 133, 4056

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