Chapter 4 Mastering Algebraic Expressions

Chapter 4 Mastering Algebraic Expressions

7th Grade

25 Qs

quiz-placeholder

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Chapter 4 Mastering Algebraic Expressions

Chapter 4 Mastering Algebraic Expressions

Assessment

Quiz

Information Technology (IT)

7th Grade

Medium

Created by

Hengky Tan

Used 10+ times

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25 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Evaluate: 3(x + 4) when x = 2.

6

12

24

18

Answer explanation

To evaluate 3(x + 4) when x = 2, substitute 2 for x: 3(2 + 4) = 3(6) = 18. Thus, the correct answer is 18.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Combine like terms: 5x + 3x - 2 + 7.

8x - 2

8x + 5

6x + 5

5x + 9

Answer explanation

To combine like terms, add the coefficients of x: 5x + 3x = 8x. Then, combine the constants: -2 + 7 = 5. Thus, the final expression is 8x + 5, which matches the correct answer.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Use the distributive property: 4(2y + 3).

8y + 6

4y + 3

8y + 12

6y + 9

Answer explanation

To apply the distributive property, multiply 4 by each term inside the parentheses: 4 * 2y = 8y and 4 * 3 = 12. Thus, 4(2y + 3) = 8y + 12, making '8y + 12' the correct answer.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Simplify: 6a + 4b - 2a + 3b.

4a + 7b

8a + 4b

2a + 5b

6a + 7b

Answer explanation

Combine like terms: (6a - 2a) + (4b + 3b) = 4a + 7b. Thus, the simplified expression is 4a + 7b, which is the correct choice.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Evaluate: 2(3 + y) when y = 5.

12

16

20

10

Answer explanation

To evaluate 2(3 + y) when y = 5, substitute y: 2(3 + 5) = 2(8) = 16. Thus, the correct answer is 16.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Combine like terms: 7m - 2n + 3m + n.

4m - 3n

10m - n

10m + 2n

5m - n

Answer explanation

To combine like terms, add the coefficients of 'm' and 'n'. For 'm': 7m + 3m = 10m. For 'n': -2n + n = -n. Thus, the result is 10m - n, which matches the correct answer.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Use the distributive property: 5(3x - 2).

15x - 10

15 - 10x

3(5x - 2)

5x - 2

Answer explanation

Using the distributive property, multiply 5 by each term inside the parentheses: 5 * 3x = 15x and 5 * -2 = -10. Thus, 5(3x - 2) simplifies to 15x - 10, which is the correct answer.

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