6th Grade Math Textbook, Progress

27. Jack plans to buy 2.25 lb of
    coleslaw at $2.80 per pound. He
    also wants 2 lb of macaroni salad
    that sells for $3.15 per pound. Jack
    has a $10 bill in his wallet. Is this
    enough for the coleslaw and the
    macaroni salad? Explain.

How many zeros will be in the product? Explain your answer.

28. 300
    300 29. 10,000
    1000 30. 200
    35,000

Use a strategy or strategies you

have learned.

26. Leah had $312 in her bank account
    on August 1. She has made two
    withdrawals of $29.75 each, and one
    of $165.95. She also made two
    deposits of $94.20. How much does
    Leah have in her account now?

Multiply. Look for patterns.

1. 18
   10 2. 40
   5 3. 10
   3.46
   18
   100 40
   50 100
   3.46
   18
   1000 40
   500 1000
   3.46
   18
   10,000 40
   5000 10,000
   3.46

Use rounding to estimate the product.

4. 37
   88 5. 521
   64 6. 23.2
   9.18

Round to estimate. Then find each product.

7. 88
   567 8. 3.05
   2.3 9. 513
   1901


8. $45.19
   140 11. 6070
   2820 12. 97.45
   220

Write the standard form for each.

13. 52 14. 43 15. 60 16. 16 17. 25

Write in scientific notation.

18. 17,000 19. 421,000 20. 20,800,000 21. 503,300,000

Write the standard form for each.

22. 2
    102 23. 3.6
    104 24. 9.01
    105 25. 3.026
    106

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