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The rules for the sign (positive or negative) of the result of a multiplication is the same as division.
For multiplication:
Positive * Positive --> Positive
Positive * Negative --> Negative
Negative * Positive --> Negative
Negative * Negative --> Positive
For division:
Positive / Positive --> Positive
Positive / Negative --> Negative
Negative / Positive --> Negative
Negative / Negative --> Positive
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How is multiplying and dividing rational numbers similar to multiplying and dividing integers?
did you get this off of big ideas learning
How is multiplying complex numbers similar to multiplying polynomials?
no
How is doing operations with rational expressions similar or different from doing equations with fractions and how can they be used in real life?
How is doing operations (adding, subtracting, multiplying, and dividing) with rational expressions similar to or different from doing operations with fractions?If you know how to do arithmetic with rational numbers you will understand the arithmetic with rational functions! Doing operations (adding, subtracting, multiplying, and dividing) is very similar. When you areadding or subtracting they both require a common denominator. When multiplying or dividing it works the same for instance reducing by factoring. Operations on rational expressions is similar to doing operations on fractions. You have to come up with a common denominator in order to add or subtract. To multiply the numerators and denominators separated. In division you flip the second fraction and multiply. The difference is that rational expressions can have variable letters and powers in them.
How is multiplying and dividing decimals similar to multiplying and dividing whole number?
Multiplying decimals: Example: 2.5 x 1.3 = 3.25 Start by removing the decimal points, thus: 25 x 13 = (the answer is 325) Both 2.5 and 1.3 have 1 decimal places, so 1 + 1 = 2 (decimal places) Counting 2 places, right to left, places the decimal point here: 3.25 Search Google for division of decimals - there are plenty of how to examples and help on the internet!
How is multiplying rational numbers like multiplying fractions and multiplying decimals?
Fractions and decimals are usually rational numbers. Besides, multiplying rational and irrational numbers is also similar.
