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Good knowledge of multiplying Fractions!Before you start this lesson on multiplying fractions, I recommend that you become familiar with multiplication table Multiplying fractions is very easy. However, I would like to introduce the topic with a challenging example. Say that you bought a medium pizza and your pizza has 8 slices.If someone eat half of your pizza,or 4 slices, you are left with 4/8 or 1/2. If you decide that you are only going to eat 1 slice out of the 4 slices remaining, you are eating one 1/4 of the leftover. Remember that the leftover is 1/2. You can also argue that you only ate 1 slice out of 8 slices or 1/8. Thus, we can see that eating 1/4 of 1/2 is the same as eating 1/8 Another way to get 1/8 is to perform the following multiplication: 1/4 times 1/2 = 1/8 because 1 times 1 is 1 and 4 times 2 is 8 This is an interesting result,but all you need to remember is the following: When you multiply fractions, multiply the numerators together and then multiply the denominators together. More examples 3/5 times 4/7 = 12/35 sometimes, it is a good idea to simplify the fractions before multiplying. Take a look at the following example: 10/20 times 3/15 Since 10/20 can be simplified as 1/2 and 3/15 can be simplified as 1/5, you will be better off multiplying 1/2 by 1/5. This way, it is easier to do the multiplication to get 1/10. Multiplying mixed numbers: If you don't remember what a mixed number is or how to change a mixed number to improper fractions, it is a good time to review improper fractions Before, you can actually multiply mixed numbers, it is imperative that you change them to improper fractions. Example: 3 1/2 times 2 2/5 = 7/2 times 12/5 = 84/10 Use the following calculator to practice
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IntroductionArithmeticGeometryGraph it!Probability and statisticsReal life mathSequences and patternsAlgebraResourcesTeachers!
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|Homepage|Fractions|
|Comparing fractions|
|Improper fractions|
|Adding fractions|
|Subtracting fractions|
|Multiplying fractions|
|Dividing fractions|
|Complex fractions|
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