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Operations With Rational Numbers

5 Questions
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Mathematical operations with decimals and percents.

Questions and Answers
  • 1. 
    • A. 

      37.92

    • B. 

      372.96

    • C. 

      778.9

  • 2. 
    58.49 x 22.118 =
    • A. 

      1293.68182

    • B. 

      12936.8182

    • C. 

      129.37

  • 3. 
    457.89 - 32.74 =
    • A. 

      13.15

    • B. 

      425.15

    • C. 

      490.63

  • 4. 
    210.45 / .05 =
    • A. 

      42.90

    • B. 

      420.9

    • C. 

      4209

  • 5. 
    How could you find 15% of $72.00
    • A. 

      Convert 15% to the decimal .15 and multiply $7.20 times .15.

    • B. 

      10% of $72.00 is $7.20 plus 5% of $72.00 is half of 10%, so $7.20 plus $3.60 equals $10.80.

    • C. 

      Find 1% of $72.00 which is .72 and multiply by 15.

    • D. 

      A

    • E. 

      A and B

    • F. 

      All of the above.