Evaluating Expressions
Flashcard
•
Mathematics
•
7th - 10th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the formula for the difference of squares?
Back
The difference of squares is given by the formula a² - b² = (a - b)(a + b).
2.
FLASHCARD QUESTION
Front
How do you evaluate an expression with given values for variables?
Back
To evaluate an expression, substitute the given values for the variables and perform the arithmetic operations according to the order of operations (PEMDAS/BODMAS).
3.
FLASHCARD QUESTION
Front
What is the order of operations in mathematics?
Back
The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), often abbreviated as PEMDAS or BODMAS.
4.
FLASHCARD QUESTION
Front
How do you simplify the expression (18 - ab) + 4b?
Back
To simplify, substitute the values of a and b into the expression, then perform the arithmetic operations.
5.
FLASHCARD QUESTION
Front
What does it mean to evaluate x² - xy for specific values of x and y?
Back
It means to substitute the specific values of x and y into the expression and calculate the result.
6.
FLASHCARD QUESTION
Front
What is the result of evaluating 2x + 5(y - 1) when x=8 and y=5?
Back
The result is 36, calculated by substituting x and y into the expression and simplifying.
7.
FLASHCARD QUESTION
Front
How do you handle negative numbers in expressions?
Back
When evaluating expressions with negative numbers, treat them as you would positive numbers, but remember that subtracting a negative is equivalent to adding a positive.
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