Division
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Transcript of Division
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Division
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How many 5’s are in 230?
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230 is actually 200 + 30 + 0 So, you have 2 (100’s) , 3 (10’s) , and 0 (1’s) Let’s practice What is 456 broken down into 100’s ,10’s, and 1’s? You have 4 (100’s) 5 (10’s) and 6 (1’s) Understanding place value and multiplication facts are key components for
successful division.
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First step:
Does 5 x 100 more or less than 230? If the answer is more you
must put a zero in the hundreds column.
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2nd step: What 5 x 10’s is closest to 230? (Remember we are now working the tens column.)
5 x 10 = 50 5 x 20 = 100 5 x 40 = 200 5 x 50 = 250 (too much!!) So, now we put the 4 in the tens
place. Which represents 5 x 40 = 200.
You then place the 200 underneath the 230 then subtract to find what remains.
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Next we need to find what number goes in the one’s column?
5 x 2 = 10 5 x 3 = 15 5 x 6 = 30 Then you place your 6 in the
one’s column. Place 30 underneath the previous remainder. Then subtract.
Your answer is 46. There are 46 five’s in 230.
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Standard Algorithm
Here’s another way to do the same problem. Same question exist. How many 5’s are in 230?
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First question you ask is does five go into two? No So, now you must put a zero above the two.
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Next you asked. How many 5’s go into 23 without going over? 4 Then you place the 4 in the ten’s column, above the 3. Then you place 20 below the 23 in 230. The 20 represents 5 x 4.
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After you subtract 20 from 23. Which is 3 you need to bring down the number in the one’s column (zero).
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Then we need to find what goes in the one’s column.
To do that we need to figure out how many 5’s are in 30?
There are six. (5 x 6 = 30) Then you place the 30
underneath the previous remainder (30) then subtract.
Your answer is 46.
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Khan Academy video and links for LOOONG DIVISIONHTTPS://WWW.KHANACADEMY.ORG/MATH/ARITHMETIC/MULTIPLICATION-DIVISION/LONG_DIVISION/V/DIVISION-2