Using substitution to evaluate expressions

Using substitution to evaluate expressions

Assessment

Flashcard

Mathematics

7th Grade

Practice Problem

Hard

Created by

Wayground Content

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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 specific value or another expression to evaluate or simplify an expression.

2.

FLASHCARD QUESTION

Front

How do you distribute in an expression like 4(2x + 10y)?

Back

To distribute, multiply each term inside the parentheses by the factor outside. For example, 4(2x + 10y) becomes 4*2x + 4*10y, which simplifies to 8x + 40y.

3.

FLASHCARD QUESTION

Front

What is the equivalent expression for 4(2x + 10y)?

Back

The equivalent expression is 8(x + 5y).

4.

FLASHCARD QUESTION

Front

How do you evaluate an expression like 7y - 3y for y=2?

Back

Substitute 2 for y in the expression: 7(2) - 3(2) = 14 - 6 = 8.

5.

FLASHCARD QUESTION

Front

What is the value of the expression 6h + 30 when h = 6?

Back

Substituting h = 6 gives 6(6) + 30 = 36 + 30 = 66.

6.

FLASHCARD QUESTION

Front

How do you evaluate the expression 4g + 2h + 4 if g = 3 and h = 9?

Back

Substituting g = 3 and h = 9 gives 4(3) + 2(9) + 4 = 12 + 18 + 4 = 34.

7.

FLASHCARD QUESTION

Front

What is the result of evaluating 4y when y = 3?

Back

Substituting y = 3 gives 4(3) = 12.

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