Applications of Multiplying Rational Numbers Quick Check
1 of 51 of 5 Items
Question
How-to books make up 0.3 of the books in the school library. Of these, 0.2 deal with carpentry and 0.4 deal with electronics.
0.3×0.4=0.12
Interpret what the answer 0.12 represents in this equation above.
(1 point)
Responses
the portion of the how-to books that are about either carpentry or electronics
the portion of the how-to books that are about either carpentry or electronics
the portion of books in the library that are how-to books
the portion of books in the library that are how-to books
the portion of the books in the library that are how-to books on electronics
the portion of the books in the library that are how-to books on electronics
the portion of books in the library that are how-to books on carpentry
15.96 mi²
A diver searches for a sunken treasure that is 97.2
feet below the surface. What is the diver's elevation when he is 2/3 of the way down? (1 point)
Responses
−32.4
ft.
negative 32 point 4 ft.
−64.8
ft.
negative 64 point 8 ft.
−48.5
ft.
negative 48 point 5 ft.
−145.8 ft.
Sara discarded 1/10 of the apples she picked as defective. Of the apples remaining, 300 were made into cider. The rest were sold as fresh fruit. What fraction of the total apples picked were sold as fresh fruit?(1 point)
Responses
not enough information
3/5
Start Fraction 3 over 5 End Fraction
3/10
Start Fraction 3 over 10 End Fraction
4/5
The town of Oak Manor measures 3.8 miles by 4.2 miles. Solve for the total area.(1 point)
Responses
16 mi2
16 mi squared
8 mi2
8 mi squared
15.96 mi2
15.96 mi squared
15.96 mi
-64.8 ft.
A basketball player is 6 2/3 feet tall. His infant son is 1/4 as tall. How tall is his son?(1 point)
Responses
1 1/2 ft.
1 Start Fraction 1 over 2 End Fraction ft.
1 2/3 ft.
1 Start Fraction 2 over 3 End Fraction ft.
2 2/12 ft.
2 Start Fraction 2 over 12 End Fraction ft.
2 2/3 ft.
Which of the following does not have the same value as the others?(1 point)
Responses
−3/7
Start Fraction negative 3 over 7 End Fraction
−3/7
negative Start Fraction 3 over 7 End Fraction
3 / −7
Start Fraction 3 over negative 7 End Fraction
−3/−7
−3/7 (negative 3/7)
Using the rules for dividing signed numbers, what is the quotient when you divide 56÷(−4)÷(−2)?(1 point)
Responses
−28
negative 28
−7
negative 7
7
7
28