Grades 1-2 Video Solutions 2021-video 2021 1-2/22

Video Transcription

Problem number 22. Each participant in a cooking contest baked one tray of cookies like the one shown. What is the smallest number of trays of cookies  needed to make the following plate? A1, B2, C3, D4, or E5? To solve this problem we'll look at the types of cookies on each tray and we'll figure out what  multiple of the tray we need for each kind of cookie. Whichever type of cookie needs the most trays is the one that will tell us how many trays of cookies  we need to make the plate. Let's start from the left. We have these small star cookies and there are three of them on the tray. On the plate there are one, two,  three, four of them. So for the star cookies we need at least two trays because three cookies is not going to be enough and if we have two trays we'll  have six of these cookies so that will be enough. So we would need two trays. Now we have the round cookies. There are also three of them on the tray and on  the plate there aren't any. We're not even going to have to worry about these. Then there are the triangle cookies. There are three of them and on the plate  there are one, two. So one tray would be plenty for those. So still right as of now we would need at least two trays. Next cookies are these bigger stars.  There are two here and there are one, two, three down here. So we would need to make two trays of cookies. That would give us four stars which is enough to fill up  this plate. Just one tray would not be enough. Next there's one moon-shaped cookie and on the tray we have one, two, three of them. Since the tray only has  one cookie we would need three trays to have enough cookies of this shape to fill it up. So that's our biggest number so far, three. Then we have the heart  shaped cookies. On the tray there are two of them and on the plate there are two. So we only need one tray to have enough of the heart-shaped cookies.  So looking at our numbers we need three trays because that's the only way we're going to get three of the moon-shaped cookies. So the answer is three. Three  trays are needed to make the plate shown. Answer is C, three.

Video Summary

The problem involves determining the minimum number of cookie trays needed to fill a specified arrangement of cookies on a plate. By analyzing each cookie type on a tray and matching it to the required quantity on the plate, the maximum number of trays needed for any single type is calculated. The moon-shaped cookies require three trays to provide enough cookies for the plate. Therefore, the smallest number of trays needed to meet all the cookie requirements on the plate is three. The answer is C, three.

Keywords

cookie trays

minimum number

moon-shaped cookies

cookie arrangement

required quantity