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Understanding Linear Expressions and Equations

Understanding Linear Expressions and Equations

Assessment

Interactive Video

Mathematics

6th - 8th Grade

Practice Problem

Hard

Created by

Thomas White

FREE Resource

This lesson covers the concepts of equal and equivalent expressions through diagrams and comparisons. It explores expressions like x+3 and 2x, 4x and 15+x, and 2b+b and 3b, demonstrating when they are equal or not. The lesson also includes solving equations such as 80% of x equals 100 and applying these concepts to story problems.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the total number of units for x + 3 when x equals 1?

2 units

3 units

4 units

5 units

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When x equals 3, how many units do x + 3 and 2x both equal?

7 units

8 units

6 units

5 units

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

For which value of x do 4x and 15 + x have the same value?

x = 3

x = 2

x = 5

x = 4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why are 4x and 15 + x not equivalent expressions?

They are both linear expressions.

They are always equal.

They are both quadratic expressions.

They have different values for different x.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the value of 2b + b when b equals 2?

4

5

6

7

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Are 2b + b and 3b equivalent for all values of b?

No, they are equivalent only for b = 2.

No, they are never equivalent.

Yes, they are always equivalent.

Yes, but only for b = 1.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the value of x when 80% of x equals 100?

100

120

125

150

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