Long Division with Two Digit Divisors

[PachiSusan]

:willy_nilly: :eek: :mad: :p :blink: :( :banghead: :banghead:

 

I have never run across the look she gives me when I explain how to do this. She is awesome at one digit.

 

Any teaching tricks?

[jennynd]

Ask her to solve a single digit question. Put that right beside her. Ask her to solve a 2 digit follow exact same process.

[kiana]

Maybe try working on two digit divisors that end in '0' first?

[boscopup]

I started with multiples of 10, then did ones like 11 or 12, where he already knew the facts well. Then moved on to any two-digit number. I also taught him how to estimate to see which number works.

[serendipitous journey]

It was working through this with Kitchen Table Math 2's section that finally got us going. Then we went back to our regular curriculum for practice.

[letsplaymath]

If you have to do long division by hand with a 2-or-more digit divisor, I recommend starting with a "counting by" list in the margin of your paper or white board. For instance, today my daughter had to divide by 32 in the middle of a pre-algebra problem, so she listed:

32

64

96

128

160

192

224

256

288

320

When you get up to ten times the number, you know you've gone far enough. You can really stop at 9 times, or even just go up as far as you need to recognize how many will go into the first step of your division. My daughter actually stopped at 192, because that gave her what she needed to know, but I finished the list here as a demonstration.

 

Now, it's easy to see what 3 of your number will be, or 7 of it, or however many will go into whatever you are dividing...

[susankhan]

Trick..... Say you have 564 divided by 24 ask about how many times does 2 go in to 5 (2 is the first number in 24 and 5 is the first number in 564). The answer will be usually one less or one more. So for this problem 2 goes in to 5 2 times. Just make sure she puts the answer over the 6. Continue the problem this way only using the first number to divide. I know this sounds a bit confusing but it really helped my son with long division.

 

 

Susan Khan

[Jyniffrec]

Look at www.educationunboxed.com under the division videos. They will help her get the concept of what you are doing.

[...................]

We did the same thing as Susan above. Just use the first number to get an idea of where to start.

[dbmamaz]

my younger son just rocks at math. long division has been his very least favorite part of math, ever. He hated it and didnt understand it. i even asked dh the mathematician if there is any other way to do it, and he said no. We just did 2-3 problems a day for a week, and took a break for a month, and revisited again. Today he had to do a 2 digit in to 4 digit in a different program and asked if he could use a calculator and i said no . .and he wailed . . and i brought him pencil and paper and he wailed . . and i drew the little frame for the problem and he said "Oh, that." and did it no trouble. well, except he confused the remainder and the quotient.