# Number SySTEM Formative Assessment 2 - 4th Hour

Approved & Edited by ProProfs Editorial Team
The editorial team at ProProfs Quizzes consists of a select group of subject experts, trivia writers, and quiz masters who have authored over 10,000 quizzes taken by more than 100 million users. This team includes our in-house seasoned quiz moderators and subject matter experts. Our editorial experts, spread across the world, are rigorously trained using our comprehensive guidelines to ensure that you receive the highest quality quizzes.
| By TBlanton
T
TBlanton
Community Contributor
Quizzes Created: 1 | Total Attempts: 197
Questions: 10 | Attempts: 197

Settings

This formative assessment checks your understanding of the real number system, fraction/decimal conversions, ratios, exponents, and scientific notation.

• 1.

### _____ .6

• A.

<

• B.

>

• C.

=

B. >
Explanation
The answer is ">" because it represents the greater than symbol. In mathematical notation, ">" is used to compare two numbers and determine if the left number is greater than the right number.

Rate this question:

• 2.

### In a group of 20 students, 6 are sixth graders, 2 are seventh graders, and 12 are eighth graders.  Write the ratio of eighth graders to the total number of students in simplest terms.

3:5
3 to 5
3/5
Explanation
The ratio of eighth graders to the total number of students can be found by dividing the number of eighth graders (12) by the total number of students (20). Simplifying this ratio gives us 3:5, which means that for every 3 eighth graders, there are 5 students in total. Another way to express this ratio is 3 to 5 or 3/5.

Rate this question:

• 3.

• A.

• B.

>

• C.

=

• D.

A.
• 4.

### A horse runs 50 meters per 8 seconds.  Express the horse's speed as a unit rate.

• A.

6

• B.

6.25

• C.

6 meters

• D.

6.25 meters

• E.

6 meters per second

• F.

6.25 meters per second

F. 6.25 meters per second
Explanation
The horse runs 50 meters in 8 seconds, so to express its speed as a unit rate, we divide the distance by the time. Therefore, the horse's speed is 6.25 meters per second.

Rate this question:

• 5.
3
• 6.
238
• 7.
9
• 8.

### Write 5100300000 in scientific notation.

C.
Explanation
5.1 x 10^9

Rate this question:

• 9.

.001846
0.001846
Explanation
The given question asks to evaluate the number and express the answer in standard form. The numbers .001846 and 0.001846 are already in standard form, as they are written in decimal notation without any trailing zeros. Therefore, the answer is simply the same as the given numbers, .001846 and 0.001846.

Rate this question:

• 10.

### Where should parentheses be placed to make this statement true? 7 + 3 x 5 - 1 = 19

• A.

(7 + 3) x 5 - 1 = 19

• B.

7 + (3 x 5) - 1 = 19

• C.

7 + 3 x (5 - 1) = 19

• D.

(7 + 3) x (5 - 1) = 19

• E.

The equation does not need parentheses to be true.

C. 7 + 3 x (5 - 1) = 19
Explanation
The correct answer is (7 + 3) x (5 - 1) = 19. This is because according to the order of operations in mathematics, parentheses should be used to indicate which operations should be performed first. In this case, the expression inside the first set of parentheses, 7 + 3, should be calculated first. Then, the expression inside the second set of parentheses, 5 - 1, should be calculated. Finally, the multiplication and addition should be performed to get the final result of 19.

Rate this question:

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 20, 2023
Quiz Edited by
ProProfs Editorial Team
• Sep 11, 2013
Quiz Created by
TBlanton

Related Topics