# Roman Alvarez

Prealgebra teacher | Experienced educator in USA

Greetings! I'm a passionate educator with a focus on Prealgebra. My academic journey led me to specialize in this fundamental subject at Endicott College. Committed to fostering a love for math, I thrive on simplifying complex concepts for students. Let's embark on a learning adventure together, where Prealgebra becomes an accessible and enjoyable experience!

## Questions

How do you round 139,664 to the nearest ten?

Is #6 + -1# positive or negative?

How do you write 251,000.0 in scientific notation?

How do you convert 6 15/25 into a percent and decimal?

How do you rationalize the denominator and simplify #1/sqrt11#?

How do you simplify #5- -8#?

How do you simplify #1,000,000,000\times 6,000,000,000#?

How do you find the sum #-3+(-8)#?

How do you evaluate #\frac { - 9^ { 2} + 47} { - 2}#?

How do you write the subtraction problem #7/8-9/10# as an addition problem?

What is the set of numbers to which #8/3# belong?

How do you find the GCF of 28 and 36?

How do you find the LCM of #18xy^2, 15y^3#?

Is 3 a rational number?

How do write in simplest form given #7/15-2/15#?

How do you evaluate #(abs(3-3)--4)times5#?

Articles are bought at #Rs.45# per dozen and then sold at a rate of #Rs.85# per score. What is the gain percent?

54 cm is how many inches?

How can we find the sign, positive or negative, of #(8(-2)(14)(-3)(-38))/((-19)(-28)(-27))#, without determining numerical answer?

How do you find the difference #-6-(-4)#?