TenMarks teaches you how to solve multi step problems on division of decimals.
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Learn about Multi Step Problems on Division of Decimals Video lesson lets learn about multi step problems, there are two problems given to use the first one lets to try it first it says for Jack’s birthday his friends bought him a football for $50.00 and 50 cents and a card for $2.00 and 25cents, if jack has five friends what is the average amount each of friends paid for the gift? So what do we know, for the first problem us that his friends bought him a football which costs $50.00 and 50cents and a card which costs $2.00 and 25 cents so this is a multi step problem. First we need to figure out what is the total cost of Jack’s birthday gift? So the total cost of Jack’s gift was the cost of football plus the cost of the card taking a little bit of extra space if the cost of the football and card are totaled, so the total money spent was $50 and 50 cents + $2.00 and 25cents which equals $52.00 and 75 cents so five friends the total cost of his gift was $52.00 dollars and 75cents so the amount paid by five friends equals $52 and 75cents, so amount paid by each friends equals $52.00 and 75cents divided by five since they divided the gift equally so lets try and do that division. In order to divide 52.75 /5 what do I do? Well we ignore the decimal for a minute so 5*1 which means the zero and I bring down two 5 or 2/5 can't be done so I put zero then I bring down zero so with remainders 2 then I bring down seven, 5*5 is twenty-five remainders two I bring down five and 5*5 is twenty-five which means the remainder is zero. So the division of 5275 divided by 5 will give me 10.55 but I have to add a decimal spot here costs this is the point where I used up the whole number part. fifty-two was used up right here so because of that I had one zero at left so that the division value gives me that the amount paid by each friend is $10.00 and 55 cents that’s what each friend paid, that’s the answer lets change the color of the pen and look for the second problem. The second problem wants us to simplify 0.29 + 18.6 divided by three, lets write this equation down were we have space. So the second problem is 0.29 +18.6 divided by three now this is got an addition operation and a division operation so we have to follow the order of operations which says that you divided and then add, division comes before addition, so first lets solve this. So 18.6 / 3 will give you 3*6 is 18, zero I bring six down I add the decimal because I’m using all the whole number part, 3*2 is 6 which means nothing left so the answer is 6.2. So 18.6 divided by 3 equals 6.2 so I can write the equation down again, lets replace create a little bit of space so I can write the equation as 0.29 +18.6 divided by 3, so 0.29+6.2 I can simply solve by adding it, in order to do that this one 6.2 has one digit to the right of the decimal spot 0.29 has two digits so first we equal the number of digits to the right of decimal we’ve got 0.29 which has two digits 6.2 I can make 6.2 zero to get to two digits, remember that I can keep adding zeros towards the end of the number after the decimal it makes no difference so now that I have this two I can add them nine, 2+2, 4 copy the decimal 6 and 0 get six so the final answer is 6.49. Quickly recapping what we’ve learned in this particular video, well we’ve learned is if we were doing a problem where we know that we have to add this two first and then I have to divide, amount paid by five friends equals this divided by five, I simply perform a division and the key to remember is where do I have the decimal and the decimal is added when I’ve used up the whole number part which is fifty-two which was used up right here, the answer becomes 10.55 which is the dollar amount paid by each friend, similarly if I’ve got an equation and I have to simplify this I have to remember the order of operations so I always divide first, when I divided 18.6 by 3 I get 6.2, 6.2 when added to 0.29 give me 6.49 and the way we have this is 6.2 becomes 6.20 to equat
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