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Today's Goal: Today students will be able to tell what a rational numbers. compare rational numbers and put rational numbers in order form least to greatest and greatest to least.
Rational Number: A number that can be written as a fraction.
How to compare rational numbers.
First look at the numbers you are being asked to compare. Are they in the same form, that is are they both decimals or both fractions?
Both Decimals
If they are are both decimals, line up the decimals and then start comparing tot he digits from left to right as we did earlier in the year.
Videos
Both Fractions
If they are are both factions, you must get them to have a common denominator before you can compare them. The least common denominator is the same as the least common multiple.
Practice Sites
Munchers - Learn the difference between, whole number, integers, rational numbers and irrational numbers. Munch only the number type asked for.
Jeopardy - Compare integers, decimals, fractions & rational numbers.
Rags to Riches - Like a millionaire game. Compare rational numbers
Ordering Rational Numbers - Drag the balls so they are in the order asked for. Be sure to look at the top of the screen top se which way they want you to order them.
Not the Same
If they are different forms, you must first get them to be the same form. Getting them to both be decimals is usually the easiest way to handle this type of problem.
Remember - to change a fraction into a decimal, simply divide the numerator by the denominator. Then compare the two decimals just like the section above.
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