If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content
Current time:0:00Total duration:2:17

Video transcript

so we have one two three four five blueberries here so we have five blueberries and we have one two three cherries three cherries now if I wanted to figure out the total number of fruit that I have here I could say the total number of pieces of fruit what should I do should I add five plus three so should I add five plus three or should I subtract should I do 5 minus three to get the total number of fruit that I have and I encourage you to pause the video now and try to think about it on your own well if I want the total number of fruit I'm starting with five blueberries and now I have three more I'm going to add three I'm going to get a larger number of fruit I start with five I'm going to have three more so I am going to add three and so how many blueberries do I have well what's five plus three it's one two three four five six seven eight pieces of fruit eight pieces of fruit now what would 5-3 have meant what would five minus three five minus three what would that mean well you could imagine starting off with five pieces of fruit let me copy and paste that copy and paste that so if you start with five pieces of fruit and now if you're subtracting three this means taking away three of your fruit so take away one take away two and take away three so how many are you left with well you're just left with these one two right over here so 5 minus 3 is 2 so if someone says hey I have five blueberries then I have 3 more cherries how many pieces of fruit well now I'm going to be adding but if someone says I have five blueberries and then I ate three of them how many do I have left well then you have to left