Adding and subtracting rational numbers

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•
Mathematics
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a rational number?
Back
A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.
2.
FLASHCARD QUESTION
Front
How do you add two rational numbers with different denominators?
Back
To add two rational numbers with different denominators, find a common denominator, convert each fraction to an equivalent fraction with that denominator, and then add the numerators.
3.
FLASHCARD QUESTION
Front
What is the process for subtracting rational numbers?
Back
To subtract rational numbers, convert them to have a common denominator, then subtract the numerators and keep the common denominator.
4.
FLASHCARD QUESTION
Front
What is the height of a pylon that is 3½ yards below ground and 2¼ yards above ground?
Back
The height of the pylon is 5¾ yards.
5.
FLASHCARD QUESTION
Front
How do you simplify the expression -1/3 - (-5/12)?
Back
You can simplify it to -1/3 + 5/12.
6.
FLASHCARD QUESTION
Front
What is the value of the expression -1/3 - (-5/12)?
Back
The value of the expression is 1/12.
7.
FLASHCARD QUESTION
Front
What is the result of adding -8.6 and 7.2?
Back
The result is -1.4.
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