Rational Numbers Answers

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Which expression can be used to determine how much money Mary has left?

20 – 5.50 + 3.75 + (2) (1.25) + 2.75

20 – (5.50 + 3.75 + 2(1.25) + 2.75)

(5.50 + 3.75 + 2(1.25) + 2.75) - 20

How much money does Mary have left?

$3.50

$5.50

$6.50

Which operation must be performed last?

addition

multiplication

subtraction

Which is the simplified expression in the decimal form?

19.42

-19.42

27.06

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