{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# Topic 1 - If the signs are different it is the same as...

This preview shows pages 1–2. Sign up to view the full content.

*RATIONAL NUMBERS* As you investigated the problems in this topic, you refreshed your memory of positive and negative rational numbers, including whole numbers, fractions and decimals. Let's review each type of number: Whole numbers are the natural numbers, plus zero Integers are whole numbers and their opposites. Rational numbers are any number that can be written as the quotient of two integers, where the denominator is not zero. Look again at how these numbers are related to each other. **When working with the algebra tile and number line models for integers, you should have noticed some patterns when combining positive and negative integers. If the signs are the same, you will add, and keep the same sign. For example:

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: If the signs are different, it is the same as subtraction, and you will keep the sign of the number that is farthest from 0 on the number line. For example: ***You also reviewed the patterns of working with fractions. When multiplying two fractions, multiply the numerators to find the numerator of the answer. Multiply the denominators to find the denominator of the answer. When dividing two fractions, multiply the first fraction by the reciprocal of the second fraction. Make 2 into a fraction by making the denominator 1 Multiply the first fraction by the reciprocal of the second fraction ****Finally, you reviewed the order of operations for evaluating mathematical expressions....
View Full Document

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern