Video: Using the 12 Times Table

Elizabeth is making model birds. To make 4 birds, she uses 48 feathers. How many feathers does she need for one bird? How many feathers does she need to make 11 birds?

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Video Transcript

Elizabeth is making model birds. To make four birds, she uses 48 feathers. How many feathers does she need for one bird, and how many feathers does she need to make 11 birds?

We read that to make four birds you need 48 feathers. And if that’s true, how many feathers would we need to make one bird? We can use equivalent fractions to solve this problem. To get from four to one, you divide by four. If we want equivalent fractions, we’ll need to do the same thing in the numerator that we did in the denominator. 48 divided by four equals 12.

For every one bird, we need 12 feathers. And how many feathers would we need for 11 birds? We can make another equivalent fraction: 11 birds equals how many feathers. Moving from one bird to 11 birds is multiplying by 11, one times 11. To find out how many feathers 11 birds would need, we would multiply 12 times 11.

We know that 12 times 11 is 132. 11 birds need 132 feathers. One bird needs 12 feathers, and 11 birds would need 132 feathers.

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