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Interactive multiple-choice quiz: اختبار الوحدة الأولى - ريفيل

هذا الاختبار يتناول مفاهيم الأسس والترميز العلمي لطلاب الصف الثامن.
يشمل الاختبار تبسيط التعبيرات الجبرية الأسية، وتحويل الأعداد بين الصيغتين القياسية والعلمية.
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اختبار شهادة تدريبي مؤقت للصف والمادة والفصل نفسه.

ابدأ السباق ✨
رقم الاختبار 2263
الصف الصف الثامن
المادة رياضيات
الفصل الفصل الأول
السنة الدراسية 2026/2027
عدد الأسئلة 15
إجمالي النقاط 15
تاريخ الإضافة 2026-09-18
الزيارات 13
الناشر Amal Salman
اختر إجابة واحدة لكل سؤال. عند الاختيار ستظهر النتيجة فورًا: الأخضر صحيح، والأحمر خطأ، وسيظهر تفسير الإجابة مباشرة إن كان متوفرًا. وبعد آخر سؤال ستظهر الدرجة النهائية تلقائيًا.
Question 1
1
Points: 1
Write the expression using exponents: n × n × p × p × r × r × r
Question 2
2
Points: 1
A scientist estimates that, after a certain amount of time, there would be 25 × 33 × 105 bacteria in a Petri dish. How many bacteria is this?
Question 3
3
Points: 1
Simplify the expression: 9p4 × (-8p2)
Question 4
4
Points: 1
The table shows the number of bacteria in each Petri dish: Dish A has 86 and Dish B has 89. Dish C has 82 \times as many bacteria as Dish A. Which Petri dish holds the most number of bacteria?
Question 5
5
Points: 1
Simplify the expression: (2m5)6
Question 6
6
Points: 1
A cube has a side length of 3x6 units. A smaller cube has a side length of x2 units. How many smaller cubes will fit in the larger cube?
Question 7
7
Points: 1
Express each fraction using a negative exponent: $\frac{1}{10^5}$
Question 8
8
Points: 1
Simplify the expression: $\frac{x^{-8}}{x^{-12}}$
Question 9
9
Points: 1
The table shows the diameters of two objects: Cloud Water Droplet is 10-5 m and Pinhead is 0.001 m. How many \times larger is the diameter of a pinhead than the diameter of a cloud water droplet?
Question 10
10
Points: 1
Write the number in standard form: 1.49 × 10-7
Question 11
11
Points: 1
The population of Florida was recently recorded as 20,612,439 people. Write an estimation in scientific notation for the population.
Question 12
12
Points: 1
The table shows the approximate population and land area (mi2) for several states: Arizona (Pop: 6.83 × 106, Area: 113,594), Colorado (Pop: 5.46 × 106, Area: 103,642), Kentucky (Pop: 4.43 × 106, Area: 39,486), Minnesota (Pop: 5.45 × 106, Area: 79,627). Which state has the least population density?
Question 13
13
Points: 1
Humpback whales are known to weigh as much as 80,000 pounds. The tiny krill they eat weigh only 2.1875 × 10-3 pound. About how many \times greater is the weight of a humpback whale?
Question 14
14
Points: 1
Evaluate. Express the result in scientific notation: (7.26 × 106) - (1.3 × 104)
Question 15
15
Points: 1
At the beginning of the business day, a bank's vault held 575,900. By the end of the day,(3.5 \times 103)$ had been added to the vault. How much money did the bank's vault hold at the end of the business day? Write your answer in standard form.

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