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Current time:0:00Total duration:3:53

CCSS.Math:

we are asked which problem can we solve with 42 divided by 7 and they explained three different scenarios here we need to pick one of them so pause this video and have a go at it before we work through it together all right now let's work through this together so let's see choice a says Stephen pact 42 candy bars in his bag he gave seven of them away to his friends how many candy bars does Tevan have left well this isn't a situation of dividing this is a situation where he starts with 42 and he takes seven of them away so this would be the expression 42 minus 7 not the expression 42 divided by 7 rule that one out julie has 7 bags of jellybeans there are 42 jellybeans in one bag how many jellybeans does Julie have well for each of those 7 bags she has 42 jellybeans so this would be 7 times 42 not 42 divided by 7 rule that one out Leslie ran for 42 minutes total in one week if she ran the same number of minutes each day how many minutes did Leslie run in one day so she ran 42 minutes in total in the week and she ran the same amount every day there are seven days in a week so if we want to figure out how much did she run per day you just divide the 42 minutes total divided by seven days in a week to figure out this would tell you right over here how many minutes Leslie ran each day and so that is the problem that we would solve with 42 divided by 7 let's do another example here we are told Caleb has 21 action figures he puts three action figures in each box what does the expression 21 divided by 3 represent so pause this video again and see if you can answer that all right so this is situation where we're starting with 21 and we are dividing it into groups of 3 so these are groups groups of 3 so this is going to tell us how many groups we need if we're going to divide 21 into groups of 3 so if I wrote 21 the I did by three and so this is groups of three groups of three this is going to be equal to something and many of you might know what this is but this is going to tell us that how many groups how many groups and here a box represents a group how many groups and so this is going to be the number of boxes the number of action figures in each box they already told us there's three in each box so that would be represented just by three and the total number of action figures that would be 21 the number of boxes is the total number divided by how many in each box let's do another one Alex Brian and Marta split a box of twelve cookies evenly which expression helps us find out how many cookies each friend will receive so pause this video again and see if you can tackle it alright so we're splitting 12 cookies so we'll start with 12 and we need divide it and how many people are we dividing it between well we're dividing it between 1 Alex to Brian and three people Marta so we're going to divide it into three equal groups and you might know what that is but we don't have to figure that out we just have to say hey how many how many cookies does each of the three people receive well it's going to be 12 divided by three cookies so it is this choice right over here three divided by twelve doesn't make sense in this situation you don't have three cookies and you're not dividing it amongst twelve people and see doesn't make sense you're not just taking twelve cookies and dividing it between two people you're dividing it between three people