Question 1

Which digit is in the thousandths place in the number 12,345.6789?

Accepted Answer

7

Question 2

Round 3,284.659 to the hundreds place.

Accepted Answer

3,300

Question 3

A blood sample contains 150,000 platelets per microliter. Which place value does the digit 5 occupy?

Accepted Answer

Ten thousands

Question 4

Which of the following is the correct result for $$-24 	imes 3$$?

Accepted Answer

$$-72$$

Question 5

What is the value of $$12^4$$?

Accepted Answer

$$20,736$$

Question 6

Evaluate the expression $$8 + 3^2$ using the correct order of operations.

Accepted Answer

$$17$$

Question 7

Which operation should be performed first in the expression $$7 - 15 \div 3$$ according to PEMDAS?

Accepted Answer

Division

Question 8

Given the equation $$ab = cde$$, solve for $$b in $$terms of $$a$$, $$c$$, $$d$$, and $$e.$$

Accepted Answer

$$b = \frac{cde}{a}$$

Question 9

If $$x^2y = 13$, what is x$ in terms of y$?

Accepted Answer

$$x = \sqrt{\frac{13}{y}}$$

Question 10

On a graph titled 'Absorbance versus Concentration,' which variable is plotted on the x-axis?

Accepted Answer

Concentration

Question 11

A scientist monitors the amount of product formed over time in a reaction. The graph shows the amount of product levels off after 2.5 minutes. What does this indicate?

Accepted Answer

The reaction is complete and no more product is being formed.

Question 12

Which of the following best describes a direct relationship between two variables?

Accepted Answer

Both variables increase or decrease together.

Question 13

What is the correct way to enter a negative number on most scientific calculators?

Accepted Answer

Use the change sign key ($$ +/− )$$

Question 14

If you round 452.3 to the tens place, what is the result?

Accepted Answer

450

Question 15

Which of the following is true about the graph of 'Temperature versus Heat Added' if the line is straight and slopes upward?

Accepted Answer

Temperature increases as heat added increases, showing a direct relationship.

Question 16

Given the equation $$\frac{Y}{Z} = X$$, solve for $$Z.$$

Accepted Answer

$$Z = \frac{Y}{X}$$

Question 17

Which of the following is the correct value for $$4.7732$$ rounded to the tenths place?

Accepted Answer

4.8

Question 18

If a graph shows 'Amount of Product versus Time' and the amount of product stops increasing after a certain time, what does this suggest about the reaction?

Accepted Answer

The reaction has reached completion.

Question 19

Which of the following is NOT a correct step in the order of operations (PEMDAS)?

Accepted Answer

Perform subtraction before multiplication.

Question 20

Which of the following pairs is correctly matched for a graph's axes?

Accepted Answer

Independent variable on the x-axis, dependent variable on the y-axis

Essential Math Skills for Introductory Chemistry

Guida di studio - Domande di pratica

Study guide - Flashcard