Grade 8 Preview Assessment

Approved & Edited by ProProfs Editorial Team

The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.

Learn about Our Editorial Process

| By Melmorri

Melmorri

Community Contributor

Quizzes Created: 1 | Total Attempts: 631

Questions: 5 | Attempts: 631 | Updated: Mar 21, 2023

Quiz Flashcard

Settings

Feedback

During the Quiz End of Quiz

Difficulty

Sequential Easy First Hard First

Create your own Quiz

Share on Facebook Share on Twitter Share on Whatsapp Share on Pinterest Share on Email Copy to Clipboard Embed on your website

The 'Grade 8 preview assessment' quiz evaluates essential mathematical skills such as identifying non-perfect squares, calculating square roots, and determining side lengths and areas of squares. It is designed to test and enhance 8th-grade students' understanding of fundamental math concepts.

Questions and Answers

1.

1. Which number is not a perfect square?
- A.
  
  50
- B.
  
  100
- C.
  
  169
- D.
  
  441
Correct Answer
A. 50

Explanation
The numbers 100, 169, and 441 are all perfect squares because they can be expressed as the square of an integer (10, 13, and 21 respectively). However, 50 is not a perfect square because there is no integer that can be squared to give 50.

Rate this question:

2
2.

A square has an area of 12 cm². Its side length is
- A.
  
  144 cm
- B.
  
  Between 4 cm and 5 cm
- C.
  
  Between 1 cm and 2 cm
- D.
  
  Between 3 cm and 4 cm
Correct Answer
D. Between 3 cm and 4 cm

Explanation
The area of a square is calculated by multiplying the length of one side by itself. In this case, the area is given as 12 cm2. To find the side length, we need to take the square root of the area. The square root of 12 is between 3 and 4. Therefore, the side length of the square is between 3 cm and 4 cm.

Rate this question:
3.

Which square root cannot be expressed as a whole number?
- A.
  
  Square root of 121
- B.
  
  Square root of 125
- C.
  
  Square root of 225
- D.
  
  Square root of 625
Correct Answer
B. Square root of 125

Explanation
The square root of 125 cannot be expressed as a whole number because there is no integer that, when multiplied by itself, equals 125. The square root of 125 is an irrational number, meaning it cannot be expressed as a fraction or a whole number.

Rate this question:

1
4.

The area of a square drawn on side GH would be
- A.
  
  11 square units
- B.
  
  28 square units
- C.
  
  65 square units
- D.
  
  121 square units
Correct Answer
C. 65 square units
5.

The unknown side length is approximately
- A.
  
  52 cm
- B.
  
  484 cm
- C.
  
  25.6 cm
- D.
  
  48.4 cm
Correct Answer
C. 25.6 cm

Explanation
The correct answer is 25.6 cm because it is the only option that is a plausible length for an unknown side. The other options, 52 cm, 484 cm, and 48.4 cm, are all too large to be a side length of a typical object. Therefore, 25.6 cm is the most reasonable choice for the unknown side length.

Rate this question:

1

Quiz Review Timeline +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

Current Version
Mar 21, 2023

Quiz Edited by
ProProfs Editorial Team
Sep 13, 2010

Quiz Created by
Melmorri

Grade 8 Preview Assessment

1. Which number is not a perfect square?

A square has an area of 12 cm2. Its side length is

Which square root cannot be expressed as a whole number?

The area of a square drawn on side GH would be

The unknown side length is approximately

A square has an area of 12 cm². Its side length is