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# Understanding place value when adding ones

## Want to join the conversation?

• I am curious, but who came out with the term place value?
• Sorry for the late response, but, I think scientists came up with it? I'm not sure.
• what if their was a way to divide any thing by0
• Imagine you're having a sleepover. You have 10 friends with you. The pizza delivery guy got distracted and didn't deliver, and you have no pizza. You can't divide the pizza that you don't have by the 10 friends that you do have. This means nobody gets pizza and everybody is sad. Nobody gets pizza because, there is no pizza and you can't divide 0 by 10.
• Is there another way to understand place value?
• Yes, There is a lot of ways to understand place value but the salman khan explanation is way better than others so try watching again if you don't get what he mean
• This looks hard but FUN! (:
• when he said 37 = 3tens + 7ones why didn't he put a different way for adding so we can learn something new?
• tens = 10 and 3 is just 3, so Multiply 10*3 = 30 and ones is just 7. So add them all 30 +7 = 37. also you can search it up on google or on khan academy's search bar if you want to know some stragies for adding
• can you dvide it into 2
• what is 5 times 10
• You add 10 five times or 5 ten times. It's 10+10+10+10+10 or 5+5+5+5+5+5+5+5+5+5, both equals 50.
• why is it called place value like h t u
(1 vote)
• as seen at tens as 3 or t(*10) 7 as ones or u(units) and the hundreds as h or(*100)
• who made place value, and why?
(1 vote)
• We count using Arabic numerals in a base 10 system.

If you know it, try doing a complicated addition problem in Roman numerals. Without base 10, you might find it significantly harder.