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welcome to math with mr j

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in this video i'm going to cover how to

divide a three-digit number

by a one-digit number so let's jump into

our two examples here

where although the problems are very

similar in the way that they are three

digit numbers divided by a one digit

number

there are differences between these two

problems and you'll notice how they're

different

as we work through so let's jump into

number one where we have 972

divided by five so the first thing we

need to do is set this problem up

and the first number here 972

this is our dividend so when we set up

the problem

the dividend goes underneath the

division bar that's

that's the number that we're splitting

or dividing up

now the five the second number here

that's our divisor

that goes outside and now we're ready to

go through the division

process which is at the top of your

screen divide

multiply subtract bring down repeat

and if you're just starting out with

division that seems like a lot

but with more practice and the more you

go through those

steps the easier and more fluid

everything will be

so if you're overwhelmed at first don't

worry with practice

you will get a lot better so our first

step is divide

so we need to take a look at the first

number in our dividend this

nine here so we need to do nine divided

by five

so think of it as how many whole fives

whole groups of five

can we pull out of nine well one

because two groups we would need ten but

we only have nine

so one whole group of five out of nine

now we

multiply so one times five

is five then subtract

nine minus five is four

then we bring down we bring down our

next digit that's seven

so we have 47 and now we repeat the

process

so 47 divided by five how many whole

groups of five

out of 47 so think of your five facts

well we know eight times five is forty

well let's try nine times five

nine times five is forty five so we can

pull

nine whole groups of five out of 47

so we put our 9 here and then we come

back around and multiply

9 times 5 45

subtract we get 2.

bring down so now we repeat so divide

22 divided by 5. so how many whole

groups of 5

out of 22 well 4 that gets us

to 20. come back around and multiply

4 times 5 is 20.

subtract we get 2.

now we do not have anything else to

bring down we went

all the way over to the ones place so

that 2 down there that's

our remainder so we have

2 left over okay the problem didn't work

out

to give us a perfect whole number there

we have something left over

so 194 remainder

2 is our final answer

so again a lot of steps there but with

the more practice

the more you go through those steps the

easier and more fluid

you will get so on to number two and

this problem

we're going to use the same process but

it is a little different

and you'll see why here with the first

step so

let's set it up 336 divided by six

now our first step is divide so we take

a look at our first number here

and we have three divided by six so how

many whole groups of six can we pull

out of three well we can't do that we

don't have enough to pull a whole

group of six out of three so we need to

take a look

at 33 we can look at the next number

over

and consider that 33 there so 33 divided

by six

so how many whole groups of six out of

33

well five that gets us to thirty that's

as close as we can get so

five whole groups of six notice where

i'm putting the five

i'm putting the five above the 33

not above the 3. it needs to be placed

above the 33. that's a common mistake

there

so now we go through the following steps

multiply

so 5 times 6 is 30.

subtract 33 minus 30 is 3

bring down and repeat

so 36 divided by 6 how many whole groups

of 6 out of 36

and you can think of your 6 facts

multiplication facts if that helps

and we get 6 whole groups that hits

36 exactly so multiply 6 times 6

is 36 we subtract

and we end up with zero so we do not

have a remainder for number two

it worked out to be a whole number and

our answer

is 56. so some of the differences here

between number one and number two number

one we had a remainder

and we were able to take a look at our

first number in the dividend

and divide in number two we had to take

a look at 33

and hop over a place because the first

digit there

was we were not able to divide it by our

divisor

so a couple of differences there but

overall

we use the same process here so getting

this process down

is very important so i hope that helped

as far as three digit numbers

divided by one digit numbers thanks so

much for watching

until next time peace

you