1 / 15

150 likes | 253 Vues

Fraction Multiplication. And Cancelation. Fraction Multiplication. Here are some fraction multiplication problems Can you tell how to multiply fraction from these examples?. 14. 14. 14. 14. 34. __. __. __. __. __.

Télécharger la présentation
## Fraction Multiplication

**An Image/Link below is provided (as is) to download presentation**
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.
Content is provided to you AS IS for your information and personal use only.
Download presentation by click this link.
While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

**Fraction Multiplication**And Cancelation**Fraction Multiplication**• Here are some fraction multiplication problems • Can you tell how to multiply fraction from these examples?**14**14 14 14 34 __ __ __ __ __ Recall that multiplication by a whole number can be represented as repeated addition. For example, 4 • 5 = 5 + 5 + 5 + 5. You can multiply a whole number by a fraction using the same method. = + + 3 • = = + +**There is another way to multiply with fractions. Remember**that a whole number can be written as an improper fraction with 1 in the denominator. So 3 = . 3 __ 1 3 3 • 1 1 __ ______ __ 1 1 • 4 4 Notice that when you multiply a proper fraction and a number greater than 1, the product is between the factors. Multiply numerators 3 __ • = = Multiply denominators 4**1**1 __ __ 4 3 1 1 __ __ 4 3 1 1 1 __ __ __ 4 3 12 One way to find of is to make a model. Find of . = •**Multiplication**• Multiply numerator by numerator • And denominator by denominator**Try some.**• Multiply the following:**Answers**• Multiply the following:**Mixed Numbers**• Because of the order of operations, • Mixed numbers cannot be multiplied as is • Change mixed numbers to improper fractions, then multiply.**Try some**• Change any whole or mixed numbers to improper. • Multiply straight across. • Simplify answers**Answers**• Change any whole or mixed numbers to improper. • Multiply straight across. • Simplify answers**Cancelling**Reduce before you multiply**Canceling**• Reducing before multiplying is called canceling. • ICK! Instead think the following in your head.**Try one**• Say “--- goes into ____ this many times.” • As you cross each number out and write what is left after canceling above the number.

More Related