Answers3822C PRE ALG 8CRational Number Operations

Rational Number Operations — Test Answers

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21
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Which expression is equivalent to 63 point 5 6 plus negative 81 point 4 7 ?

A
negative 63 point 5 6 minus 81 point 4 7
B
negative 63 point 5 6 plus 81 point 4 7
C
63 point 5 6 plus 81 point 4 7
D
63 point 5 6 minus 81 point 4 7
22
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Which expression is represented by the number line?

A
3 minus 5 point 5 minus 1 point 5
B
3 minus 2 point 5 minus 1
C
3 minus 5 point 5 plus 1 point 5
D
3 minus 2 point 5 plus 1
23

Tatiana used the calculator to determine the result of 684÷(5)/(9) The result she got is shown. Which statement best describes her work?

A
Tatiana is incorrect. The correct answer should be about half as much as 700, and the number shown is much too small.
B
Tatiana is incorrect. The correct answer should be much smaller than what is shown.
C
Tatiana is incorrect. The correct answer should be about twice the amount that is shown.
D
Tatiana is incorrect. The correct answer should be about twice as much as 700, and the number shown is much too small.
24

Which describes the reasoning used to determine whose solution is correct?

A
Jermaine is correct because he distributed 5 correctly.
B
Mildred is correct because she distributed 5 correctly.
C
Mildred is correct because she multiplied 5 by negative 2 but not by negative 1 fourth .
D
Jermaine is correct because negative 10 minus 1 fourth equals negative 10 and 1 fourth .
25

In which step did his first error occur?

A
step 4
B
step 2
C
step 1
D
step 3

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