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How to use the Multiples of 10 Division Method. Faribault Public Schools. Introduction . Division (repeated subtraction) Using the multiples of 10 of the divisor for an easy way to divide. Agenda. Examples Practice problems to do on your white board. For a problem like 245 / 5.

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Presentation Transcript
introduction
Introduction
  • Division (repeated subtraction)
  • Using the multiples of 10 of the divisor for an easy way to divide.

Mr.H.

agenda
Agenda
  • Examples
  • Practice problems to do on your white board

Mr.H.

for a problem like 245 5
For a problem like 245 / 5
  • First of all write the problem like this
  • Make a list of the multiples of 10 on the side.

10

20

30

40

50

Mr.H.

then add brackets and your divisor
Then add brackets and your divisor

10 [5]=

20 [5]=

30 [5]=

40 [5]=

50 [5]=

50

100

150

200

250

Then figure out the multiples.

Mr.H.

determine what s the biggest one that is equal or less that what you are dividing into
Determine what’s the biggest one that is equal or less that what you are dividing into…

10 [5]=

20 [5]=

30 [5]=

40 [5]=

50 [5]=

50

100

150

200

250

40

Draw a line down the side of your problem

Subtract the number you picked from your problem

Put the multiple of 10 on the outside

Mr.H.

slide7

10 [5]=

  • 20 [5]=
  • 30 [5]=
  • 40 [5]=
  • 50 [5]=

X

X

X

X

X

50

100

150

200

250

X

X

X

X

X

40

5

Mr.H.

Since our number is smaller than our first answer ’50’ we need to go to the multiples less than ten by taking zeros away from both sides. Then repeat previous steps.

slide8

40

5

X

X

X

X

X

10 [5]=

20 [5]=

30 [5]=

40 [5]=

50 [5]=

X

X

X

X

X

50

100

150

200

250

Repeat until your answer is less than 1 times your number. If it is zero you have no remainder. Excellent! If it’s not zero put R then that number after your outside total!

Add up your outside numbers

4

Mr.H.

49