Order of Operations and Math Principles

1. $2.9536 \div 1.42$

2.1

2.08

2.8

2

Question 1 of 9

2. $1.862 \div 1.4$

$\frac{1}{3}$

1

1.4

1.33

Question 2 of 9

3. What is the greatest prime factor of 390?

390

2

13

3

Question 3 of 9

4. What is the greatest prime factor of 1,020?

2

1,020

1

17

Question 4 of 9

5. Which of the following shows the fractions $\frac {13}{5}$ , $\frac{17}{7}$ , and $\frac{19}{9}$ in order from least to greatest?

$\frac {17}{7}$ , $\frac{19}{9}$ , and $\frac{13}{5}$

$\frac {17}{7}$ , $\frac{13}{5}$ , $\frac{19}{9}$

$\frac {13}{5}$ , $\frac{17}{7}$ , and $\frac{19}{9}$

$\frac {19}{9}$ , $\frac{17}{7}$ , and $\frac{13}{5}$

$\frac {19}{9}$ , $\frac{13}{5}$ , and $\frac{17}{7}$

Question 5 of 9

6. If $x$ and $y$ are positive integers such that $\frac{x}{y} = 0.8$ , what is the least possible value of $x$ ?

8

1

16

4

Question 6 of 9

7. $50 (9 - .05)^2 - 25$

200,256.25

2,755.125

200,231.25

3,980.125

Question 7 of 9

8. At noon, the temperature was $7^{\circ}$ below zero. By 3:00pm, the temperature rose 20 degrees. What was the temperature at 3:00pm?

$30^{\circ}$

$-13^{\circ}$

$20^{\circ}$

$27^{\circ}$

Question 8 of 9

9. $5 + 9 x \frac{1}{3} + 3$

10

11

7.66

5.66

Question 9 of 9