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PinkRuby129

Hi!

I don't understand this :

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Can someone please tell me how to these problems and the answers?

Thank you!

PinkRuby ☆

FauconOmicron4707

Hello,

thanks for your question!

In the first problem, you need to use the concept of multiplying a fraction by a whole number. I recommend checking out the following information sheets :

https://www.alloprof.qc.ca/en/students/vl/mathematics/multiplying-a-fraction-by-a-whole-number-elementary-m1607

In the second problem, you need to divide the fraction by 2 because there are two cakes. To divide fractions, you have to multiply by the reciprocal. In other words, the numerator and denominator are flipped. Here, the number 2 is equivalent to the fraction 2/1. When inverted, it becomes 1/2. Then, you need to multiply the two fractions to find the amount of flour in each cake.

Here's an information sheet that might help you:

https://www.alloprof.qc.ca/fr/eleves/bv/mathematiques/la-division-de-fractions-m1383

I hope I was able to help you. Feel free to ask if you have any other questions!

Zachary T. :)