Grade 8 Preview Assessment
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1. Which number is not a perfect square?
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50
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100
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169
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441
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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.
Quiz Preview
- 2.
A square has an area of 12 cm2. Its side length is
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144 cm
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Between 4 cm and 5 cm
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Between 1 cm and 2 cm
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Between 3 cm and 4 cm
Correct Answer
A. Between 3 cm and 4 cmExplanation
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:
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- 3.
Which square root cannot be expressed as a whole number?
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Square root of 121
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Square root of 125
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Square root of 225
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Square root of 625
Correct Answer
A. Square root of 125Explanation
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:
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- 4.
The unknown side length is approximately
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52 cm
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484 cm
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25.6 cm
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48.4 cm
Correct Answer
A. 25.6 cmExplanation
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:
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- 5.
The area of a square drawn on side GH would be
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11 square units
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28 square units
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65 square units
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121 square units
Correct Answer
A. 65 square units -
Quiz Review Timeline (Updated): Mar 21, 2023 +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
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Current Version
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Mar 21, 2023Quiz Edited by
ProProfs Editorial Team -
Sep 13, 2010Quiz Created by
Melmorri
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