Donuts Make Students Bright

How to divide BIG numbers

VOCABULARY

QUOTIENTDIVISOR DIVIDEND

When dividing big numbers remember that….

Donuts divide

Make multiply

Students subtract

BRight bring-down/

remainder

Divide this….

3 685

D2

3 685 6 / 3 = 2

M 2

3 6856

2 x 3 = 6

S 2

3 685 -6

0

6 – 6 = 0

Br 2

3 685 -6

08

After you bring down, you start the donut process all over again.

D 22

3 685 -6

08 new dividend

8 / 3 = 2 r2

M 223 685 -6

08 6

2 x 3 = 6

S 223 685 -6

08 -6

2

8 – 6 = 2

Br 223 685 -6

08 -6

25

Start the donut process again.

D 2283 685 -6

08 -6

25 new dividend

25 / 3 = 8 r1

M 2283 685 -6

08 -6

25 24

8 x 3 = 24

S 2283 685 -6

08 -6

25 - 24

1

25 – 24 = 1

Br 2283 685 -6

08 -6

25 - 24

1

There isn’t another number to bring down.

The number left is less than the divisor.

So, the one becomes a remainder.

Br 228 r13 685 -6

08 -6

25 - 24

1

And you are done.

How can you check your answer?

Multiply the quotient by the divisor, then add in the remainder. It should add up to the dividend.

228 r13 685 -6

08 -6

25 - 24

1

228

X 3

684

+ 1

685