# Sets of Numbers and Algebraic Expressions

In this task, you need to name all the sets of numbers to which each given number belongs - real, rational, irrational, integers, natural, or whole. Then, compare some

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## About Sets of Numbers and Algebraic Expressions

PowerPoint presentation about 'Sets of Numbers and Algebraic Expressions'. This presentation describes the topic on In this task, you need to name all the sets of numbers to which each given number belongs - real, rational, irrational, integers, natural, or whole. Then, compare some. The key topics included in this slideshow are . Download this presentation absolutely free.

## Presentation Transcript

Slide1Day 4Name all the sets of numbers to which each number belongs to: R = real, Q = rational, I = irrational, Z = integers, N = natural, W = whole. 1. 2. 3. 4. Compare using <, > or =. 5. 6. 7. Write an algebraic expression and define the variable: 8. Six less than four times a number.

Slide22.1/2.2 Adding/Subtracting Rational #’sDon’t forget to write this “I Can” in your target sheet. (Bold words above are to signal those words were listed as an objective on the pre-test)    I can simplify numerical expressions    using  order of operations .

Slide3Additive inverse - The opposite of a #. 2.1/2.2 Adding/Subtracting Rational #’s

Slide4Identity Property of Addition - For every rational number n, n+0=n. Inverse Property of Addition  - For every rational number n, there is an additive inverse –n such that n + (-n)=0.

Slide5RULESTo  add  numbers with the same sign, add their absolute values. The sum has the same sign as the  addends  (#s being added) . To add numbers with different signs, find the difference of their absolute values. The sum has the same sign as the addend with the greater absolute value.

Slide7To subtract a number, always doBigger absolute value # - Smaller absolute value # Remember the bigger absolute value gets the sign.

Slide8Simplifying Absolute ValuesAlways simplify what’s inside first before taking the absolute value 8 9 1 - 9 - 16