Math 7 Substitution Practice
Flashcard
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is substitution in algebra?
Back
Substitution in algebra is the process of replacing a variable with a number or another expression to simplify or solve an equation.
2.
FLASHCARD QUESTION
Front
How do you evaluate an expression with given values for its variables?
Back
To evaluate an expression, substitute the given values for the variables into the expression and perform the arithmetic operations.
3.
FLASHCARD QUESTION
Front
What is the value of (2p + q) when p = 4 and q = 9?
Back
17
4.
FLASHCARD QUESTION
Front
How do you calculate (2a^2 - b) when a = 4 and b = 3?
Back
First, calculate a^2 (which is 16), then multiply by 2 (resulting in 32), and finally subtract b (3) to get 29.
5.
FLASHCARD QUESTION
Front
What is the result of (3a - b) when a = 5 and b = 2?
Back
The result is 13.
6.
FLASHCARD QUESTION
Front
How do you find the value of (x^2 - y) when x = 8 and y = 5?
Back
Calculate x^2 (which is 64) and then subtract y (5) to get 59.
7.
FLASHCARD QUESTION
Front
What is the value of (2a + 4b) when a = -3 and b = 7?
Back
The value is 22.
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