How To Add Fractions Mahalo

we're asked to multiply 32.12,or 32 and 12 hundredths, times 0.5, or just 5 tenths. now when you multiply decimals,you multiply them the exact same way you wouldmultiply whole numbers, and then you count the number ofspaces behind the decimal you

How To Add Fractions Mahalo, have in your two numbers you'remultiplying, and you're going to have that many spacesin your product. let me show you whati'm talking about. so let's just multiplythese two characters.

so we have 32.12 times 0.5. and when you write them out, youcan just push both of them all the way to the right. you could almost ignorethe decimal. right now, you should write thedecimal where they belong, but you can almost pretend thatthis is 3,212 times 5, and then we'll worry aboutthe decimals in a second. so let's get started. so if we were just multiplying5 times 3,212, we would say,

well, 5 times 2 is 10. regroup the 1. 5 times 1 is 5, plus 1 is 6. 5 times 2 is 10. and then finally, you have 5times 3 is 15, plus 1 is 16. and then we don't haveany other places. if we were just doing this as05, we wouldn't multiply 0 times this whole thing. we would just get 0 anyway.

so just 5 times 3,212 givesus this number. but now we want to careabout the decimals. we just have to count the totalnumber of spaces or places we have behind thedecimal point in the two numbers we're multiplying. so we have one, two, threespaces, or three numbers, to the right of the decimals inthe two numbers that we're multiplying. so we need that many numbers tothe right of the decimal in

our answer. so we go one, two, three, putthe decimal right over there. so 32.12 times 0.5 is 16.060. and this trailing zero righthere we can ignore, because it's really not adding anyinformation there. so we could just writethis as 16.06. the last thing you want to dois just make sure that this makes sense. you have a number that'salmost 32, and we're

multiplying it by 0.5. remember, 0.5 is the same thingas 5 over 10, which is the same thing as 1/2. so we're really multiplying32.12 times 1/2. we're trying to figure out whatone half of 32.12 is. and half of 32 is 16, and halfof 0.12 0.06, so this makes complete sense.